[NeedAntiVenom]

Terry,

Wide Ratio:

3.54 @ 80 = 3670 RPM
3.31 @ 80 = 3420 RPM
3.07 @ 80 = 3170 RPM (first is a little long)

TKO:

3.54 @ 80 = 2300 RPM

TKO-II:

3.07 @ 80 = 2630 RPM

Richmond:

2.88 @ 80 = 2970 RPM

You'll drop by 250 RPM going to a 3.31, a TKO, TKO-II or Richmond might work better. TKO will get you what you want without doing a diff swap, but the jump from 4th to 5th is fairly big.

Hope this helps.