[Formulajones]

Doesn't really matter what you pick, all of your choices are going to be better than a 2.93 with an M20 lol.

Me personally, and actually all the installs I've done for others, always go for the 2.87. Primarily because it's the only version that comes with the most overdrive, the TKX being a .68 The 3.27 1st gear versions doesn't offer it.

I prefer to set up the car as a total package which includes changing the rear gear to suit the setup, so the 2.87 trans has always been the go to.

However lately I've used G-Force T5 with aftermarket case and G-Force gear sets.
I wasn't a fan of Tremec knocking 5th gear up to a .68 or .72 when it used to be .64 It really starts to lose it's appeal. The G-Force T-5's have optional gear ratios and the ability to choose different 5th gear ratios without changing 1-4, another annoying thing about Tremec that you can't do.
To be honest the 2.87 TKO/TKX that Tremec claims to be their close ratio really isn't. The gears are spread pretty wide, the only close gear is 3-4, that's it.
With the T5 using the 2.95 gear set, 1.93/1.34 for 2nd and 3rd, it actually acts more like a close ratio than any of the Tremec offerings, and the G-Force version is rated to the same torque as the Tremec, on top of that it's a couple hundred dollars cheaper and a smaller package to boot. I also like the fact that the T-5 doesn't have a 3 rail shift system.

Just some food for thought. I'm sure the Tremec will treat you well, they are excellent upgrades for any muscle car.