One other thing about the 1989 2.8 V6 5 speed is that the charts show a unique set of gear ratios for it, which would work great for my 3.42's I think, at least the OD.

1st - 3.97
2nd - 2.34
3rd - 1.48
4th - 1.00
5th - 0.79

Projects:
1947 Chevy 3100 Thriftmaster - 255 L6/5spd
1970 Chevy Camaro - 406/T56 Mag - Pro-touring