IMHO either Genuine Porsche or SuperFlex.
A good upgrade on any 944 S2 are the 968 castor mounts, which are actually under a Porsche Technical Service Bulletin for those who have gone to 17" wheels. You can get these from Hartech as well as other specialists, but I'd check OPC's price first. I *think* the quality of the Porsche stuff may be better though. I know that mine were beginning to perish but still be intact on my 951 and they can't have been more than 6 years old then, which some may see as acceptable for the price mind you
.My S2 became far more predictable with the new castor mounts (they are basically front wishbone rear bushes, but they also serve as an adjustment for the castor.
The one thing I would recommend is new nylocs of the appropriate treatment and grade for the mounts (e.g; Zinc or galvanised).
The only place I'd poly on a 944 would be the front ARB bushes. If they see oil from the PAS or more likely an oil change (the oil filter is in a frankly stupid location!) they won't swell unlike the rubber items.
