I had a Spec 2 clutch in my 3.4 car. It chattered when it was cold and slipped when it was hot. POS.
A lot of people on Pennocks were using the 3+. There are numerous instances of the springs escaping from the center hub, and getting stuck under the release fingers, or elsewhere. (Many of these failures are 3800 SCs, but not all.)
When they first started doing clutches for Fieros, they were installing the splined centers in the hubs backwards. The result was that the protruding hub would hit the input shaft sleeve, and mushroom the end of it, causing the release bearing to bind on the sleeve, or just breaking the sleeve.
(The later Getrags and New Venture 5 speeds didn't have that issue, because they had the hydraulic release bearings. There was no sleeve for the hub to hit.)
Of course, people were pizzed, and complained. Spec would warranty their parts, assuming they were returned in time. Otherwise they'd tell the people to go pound sand. They would NOT warranty the damaged transaxles though.
Then there was the F23 spacer fiasco that many people have run into. I don't know all the details of that, but overextended release bearings for F23s are a common complaint. You'd think they'd have this stuff down to a science now, but they seem to only be interested in shipping parts, but not doing anything to learn about the applications they're shipping for.
Of course, that's one person's opinion. Some other people I know who have Spec pieces are quite happy.
Edit - This whole Spec "cluster fest" is why I run a Fiero Store HD Ram clutch in my 4.9 car. No way in hell...
