OK, so couple updates here. Received my TWM M1 Abrams in the mail today. Overall, it's a fantastic mod, and makes the shift even better than it already was with the Mountune Quick Shift kit. It just slots into gear so smoothly now, yet still has resistance, although now the resistance is more to do with the weight of the knob rather than the short shift kit.
A few observations:
1. This knob is heavy. I mean, it's a full pound.
2. The stock knob is actually fairly heavy itself. Having taken it off and held it, it's....dense. Not bad to be honest.
3. Adjusting the TWM to the right height AND getting the reverse lockout to work is a bit of a trial and error. Took me a while to get it to fit right, yet still have the engraving on top line up. That said, getting it into reverse is a bit harder now for me due to the height of the knob. I've made it sit lower down to reduce the overall height, but have taken away rome for the lockout to move up.
Again though.....love this now. I may have found the perfect shift!