I have this left over from my 3rd gen days. I had bought it for my GTA but never installed it.

New in box, with instructions, Hypertech fan switch part # 4028. On at 200F, off at 185F.

4028 - Hypertech GM Fan Switch Details
Fits: Camaro/Firebird 83-86 305 HO; 86-87 305 LG4; 88-92 305 EFI/TBI; 86-92 305 TPI With Dual Fans; 87-92 350 TPI With Dual Fans; Corvette 84-90 350 CF/TPI With Dual Fans; Fiero 85-88 2.8 MFI.

Here's the Jeg's listing for it: http://www.jegs.com/i/Hypertech/533/...002/-1?CT=999#

30 bucks shipped.

Thanks!