I just did it to my 91 a couple months ago. It ended up costing me around $650. That was with a new clutch, throwout bearing, etc. But 88bird5speed is right... I wish I spent the extra cash and got the T56 6-speed. I probably will eventually. The T56 will run you about 1300 for the whole swap.
Heck you can get a complete LS1 swap kit to put the LS1 and LS1 t56 into a 3rd gen now. ls1 conversion
You can get throttle cables, and wire harnesses too.
Eric W.
89 Firebird Formula WS6
Accel/Lingenfelter Super Ram
6.2L/382.97 ci
Custom PROM Dyno tuned
WCT-5 speed
BW 9-bolt Posi 3.45
Boss MS 18" Rims
Headman Headers 1 5/8 Ceramic Coated
Custom Dual exhaust
1LE upgrade
Custom Temperature / Navigation Rear View Mirror
In a constant state of upgrade!
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