On the driveshaft length…
I measured the original driveshaft and just shortening it by 1/2” would be a really tight install on my car. The drive flange was very close to the pinion shaft threads.
Then, after measuring the two transmissions side by side several times it looked like 3/4” shorter would be a little better choice for my 2010 model touring.
I have a 2016 3.69 mt rear diff, with a different than stock pinion angle also. That may be part of it.
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NA on E85 - 12.402 @ 112 mph
100 shot E85 - 11.589 @ 117 mph
JWT C2 cams rev Base Circle & Titan Valves
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