TKX Shifter Location
I think you'll be fine. This is a picture of a Dart with a TKX installed, courtesy @Arthur Sperotto
This is the shifter location on my T56, it appears to be pretty much in the same location as the TKX shifter, a few inches forward of the reinforcing rib in the floor board for the front seat mounts. If anything the T56 shifter location might be slightly further back
This is the '71 non console B body pistol grip shifter I used with it...
And where it sits with the Procar buckets I use
I don't think it sits too far back at all, and I've been driving the car like that for over 4.5 years now. The only thing I did to the shift handle was to shorten it, I drilled new mounting holes and cut the bottom couple inches off of the shifter. But the set back stayed the same.
I think you'll be fine. This is a picture of a Dart with a TKX installed, courtesy @Arthur Sperotto
This is the shifter location on my T56, it appears to be pretty much in the same location as the TKX shifter, a few inches forward of the reinforcing rib in the floor board for the front seat mounts. If anything the T56 shifter location might be slightly further back
This is the '71 non console B body pistol grip shifter I used with it...
And where it sits with the Procar buckets I use
I don't think it sits too far back at all, and I've been driving the car like that for over 4.5 years now. The only thing I did to the shift handle was to shorten it, I drilled new mounting holes and cut the bottom couple inches off of the shifter. But the set back stayed the same.