I made the same mod to my T5 using 1 inch square tube welded up to fit. I added sleeve inserts from round stock to prevent the bolts from crushing the adapter. Then I cut the stick off of an old SM420 and welded 2 thick 14mm nuts to the bottom so I could screw it on and off of the T5 shifter. The mod works great and keeps the throw short. Looks good too.