I had a 70 Mach1
You don't want Polyurethane bushings, though there is less play in them and they improve handling, they squeak, very annoying.
There is a compromise to this using something called Poly-Graphite, which I used. They improved car handling, but still squeaked a bit.
Remember though that I took mine to Mosport to road track it, so I needed the better handling these provided.
For a street car, just replace the stock rubber bushings (National Parts Depot in Michigan stocks them and they ship to Canada).
Or have Vintage & Performance Restoration in Waterdown order & install them for you 905 690 7637 (John Miles)
As for the sway bar, I highly recommend you go as big as you can. I installed a 1-1/8" dia Sway bar which really helped improve the body roll on cornering. No downside for a street car, just a better car.
I favoured KYB shocks to improve on the stock units also. Slightly firmer ride, but barely noticeable, but really helped with handling.
If you want to go a step further, consider Roller Spring Perches, becuase I'll bet once you take the suspension apart to do all this work, you will find the spring perches are junk. They have a limited life span, and they are wayyy under the radar of most restorers.
The Roller spring perches eliminate the "binding" the stock type rubber perch causes and frees the suspension travel for much better handling & cornering.
They are not too expensive either !
Recommend you do this all at once, as this work requires an alignment be done after installation. You don't want a new alignment everytime you add another goodie.
Last edited by mach1steve; 01-27-2010 at 12:56 PM..