unfortunate on the M21 status..... for a 3700 car with 3.73....... a M20 would be such a better choice for street driving..... yeah ask me WHY i know this. My 81 TA with a M21 , 373 400 ...SUX.... with 4.56 gears...YAY all the way up to like 60 mph. Put in the TH400 and 3.42 gears...oh HELL yeah. And time slips tel the difference...its NOT just a BUTT meter.
The 2.20 first gear absolutely sux in a heavy car. (anything over 2200)
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