Chad. You're right, every mm counts. My TB guy has done a good number of these TBs, and has found that 62mm is the most he can go. Maybe I'll send him another TB to toy with, for experimentation purposes. I'll let him know if he toasts it, he does not have to buy it. That might work. Hehehehe.
Supraii. I don't think doing an aluminum spacer will do anything for you (TB and manifold are same material). I don't have a source for getting non-metal materials cut. Realize, that if you do use a spacer, you'll have to modify the stock intake piping.