DET17
Reformed SAABaholic
- Joined
- Nov 1, 2009
- Location
- NW Georgia
Well you've seen the Whiteblock M90 thread in the FS section, and I'm sure you realize that those boxes are rare as hen's teeth in North America. However if you can source one (as Homer did) the rest of the bits appear to be pretty straight forward. The M90's (as far as I know) are all configured for the external hydraulic slave, and they are reputed to work well. I think for your application the question is, will you plan to bang shift the hell out of it (get the T5 and easy replacement/rebuild), or if you intend to drive it "sensibly" then the M90 might be for you. Gearing for a Whiteblock should have that 3.50 first, and a couple choices for 5th OD. From a true performance standpoint, I doubt you can do better than the T5 2.9 first gear, 0.79 5th to match your 3.91 final or even a 4.10 final. Build yourself an Excel spreadsheet, or just use the online calculators to find your RPM drop between gears. I'd opine that a complete M90 kit will be a simpler solution, but the T5 more of an optimum solution......just my $0.02.