Yes it’s the 4150 TQ M1. Currently have a 1/2 “ spacer so I have some room to play, but that’s one of the questions, the height difference. I know TF is taller, but don’t know the specifics. And agreed, Dwayne, best way to find out is install and run. 20-25 years ago, many a Wednesday night and weekend was spent at Lebanon, driving the car from CT, and trying different parts in between runs. Age is catching up, and wisdom somewhat :), so using others knowledge to guide my decisions helps, especially from you guys. I’ll monitor here to see if anyone has any height information. If I find something myself, I’ll update here also.