>  AB> check out the aftermarket (poly)urethane suppliers.
> 
> Where would I find such?
The local speed shops would be the place to start. Any store really that is
either into selling engine hop-up parts and accessories, truck/van
customization shops, and car customizing shops.  
Suppliers such as Energy
Suspension, Performance Suspension Technology (PST), and whoever else.
>  AB> Prices should be on par with stock rubber dealer parts.
> 
> Euw.  I was hoping for considerably less expensive,  the dealer wants
> close to
> a hundred bucks a set for these,  and there are four sets of them!
The aftermarket would consider a set, all 4 corners of the K-frame as a set.
It won't end up costing you 400 bucks if that is your concern. I think you
mentioned the dealer price was 80 bucks a corner.
> Aside from the industrial suppliers that some have recommended,  I have
> no idea what I'm looking for in the area here...
 We don't either really. =)   This will be the chance for all those Mopar or
no car fanatics to speak up with some exact specs. =) They should be ashamed
if a Chevy man has to tell them what their k-frame bushings look like. ;)  
 What I can tell you is that the k-frame is bolted to
the front frame rails at 4 points utilizing a rubber bushing as a sandwhich
to absorb some vibration and noise. But you knew that anyway. =)
If they have metal inserts, I don't
know. They might not. If they do, consider using steel pipe of appropriate
I.D. as a substitute.  Its not used so much as a structural member, but as a
big washer to protect the bushing. In my opinion, not absolutely necessary
if your rolling your own bushing. 
Shape may not matter much. The body bushings on my Nova amount to not much
more than hockey pucks, except they have a step milled in them. FWIW, until
I got the poly units, I did use a hockey puck in place of one bushing which
was entirely rotted away.  I suspect the puck route would work for you to.
As a possible source for poly hockey pucks, get a body bushing kit for an
early 70's nova. That will get you 6 pairs of pucks. You can always double
them up if you need extra thickness.  Their is a catch. The first set I
bought in 1989 did not have steel inserts. A set I bought for another car
about 93/94 did have steel inserts.  Both where from Energy Suspension and
had the same part number.  Again, you may find a speed shop which is willing
to help you find substitutes if the real thing doesnt exist. 
and their is a ridge contoured on them to match the holes in the subframe,
but thats a minor point.  They cost less than 60 Canadian dollars (Energy
Suspension) for the set, so US, its probably well under 50 USD. 
Ideally, you need a reference bushing so you know what to look for.  If the
speed shops fail to turn up a urethane component for your application
consider going back to the dealer and see if they have one in stock, or are
willing to get one to the dealership so you can look at and know what they
are supposed to look like.
As for poly-urethane. Its available in just about any color, doesn't matter
as you can't see them anyway, and road grime will give them a black look
anyway. The non-black units look like jelly beans, except much harder.  It
comes in various hardnesses, but I wouldn't worry about that, as long as its
tougher than the rubber its replacing.  It is very durable stuff, and the
ones on my Nova are fairly hard as well, which makes them easy to cut/file
to fit. So if you can find an industrial supplier of chuncks, or hockey
pucks of (poly)urethane get some fairly hard ones and you should be able to
make your own bushing.  Certainly better than no bushing.
You probably will need to visit the fastener store also (note, FASTENER, not
hardware, you want REAL grade 5 bolts to hold things together, not some
cheap imitation bolt you find at a normal hardware store) as the bolts may
be rather worn away also.  And maybe large flat washers to. 
 A liberal soaking of Liquid Wrench (Yellow Can, not the blue with
teflon) every day for a few days before the work WILL be benificial. 
Alex.
check us out;http://www.oldengine.org
 | AmiQWK 2.7 - S/N 0261 |
... I drempt I was a muffler and woke up exhausted!
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