I think he's considered most of the options - weight kits, cutting the outer ring off and welding it to the B+M, stacking the plates, crank triggers, etc. Pretty much all but the crank trigger would require getting the resulting flexplate rebalanced. If someone already makes an A500 - 360 flexplate, there isn't any reason to try to make one - thats why I posted for that style plate and not ways to make one.

Thanks for the replys.