Kiesler RS tranny or TKO?

[Fuel an]

I need to source the tranny now. Keister is recommending their RS, they say it is small and will fit with no mods, I have also gotten some info from Forte and Summit on their TKO packages. Has anyone put a Kiesler RS unit in and please advise the feedback.

[2FAST4U]

Just the same thing as a TKO with some improvements. Go with a TKO600 with the better 1st gear.