Has anybody installed Delrin Bushings on their FIAT before? I found complete Control Arms from Vick's Autosports with Delrin bushings and I have never heard about them before this. They claim they improve handling and last longer than the original but sacrifice some comfort. I appreciate any response.

I'd have thought that Delrin would be very uncomfortable for suspension bushes, it's very hard. I think it has a Rockwell Hardness of about 120.

These people do a range of Polyurethane bushes (Rockwell 70-95) which would make a lot more sense:
http://www.superflex.co.uk/products.php?cat=113