*drool* This is outstanding. Absolutely outstanding. I wish I were in your playhouse, working on these cars, MWR!
It is the E153, the strongest transaxle in the known universe. This car has the MR2-T version with the shorter final drive and factory LSD. We will be running the Camry version with the longer gears and a Kaaz diff in our LSR Celica this year. Should do better than 235mph at 9k rpm if the car and driver are willing!
Which Camry version?
The '97-'01 Camry V6 M/T version has the same ratios as the MR2 but a taller (3.9 if I'm not mistaken) final drive.. But the '92-'93 version (E53- Guts fit into E153 bellhousings/center cases) has a 3.6 final drive and shorter individual ratios.
I've used the latter in my MR2's V6 swap. With 245/40/17 rear tires, 70mph has the engine turning at about 2750rpm.
So there are three different final drives available as well as two different sets of individual ratios if you want to mix and match for ideal gear spacing and what not. My ideal:
1- 3.230 (MR2 E153)
2- 2.045 (Camry E53) [MR2 is 1.913]
3- 1.333 (Camry E53) [MR2 is 1.258]
4- 1.028 (Camry E53) [MR2 is 0.918]
5- 0.731 (MR2 E153)
F- 3.625 (Camry E53)
1st: taller.. less wheel spin and more MPH!
2nd/3rd: Good spacing, lots of usable powerband
4th: ~160mph through the top of 4th if you rev to 8,000rpm.. and unlike the MR2 gearbox, it's a proper underdriven gear as opposed to an overdrive!
5th: Excellent highway gearing! 70mph comes down to 2500rpm, depending on tire size.
Pardon my assumptions if you've already thought of this. I just get excited about great engine swaps like this.. It's what I live for, in terms of my enthusiasm for all things car.