For the engine adapter .... $550 from Phoenix !!! WOW that's not cheap ... so i decide to make my own. One call to a friend ... took all measurements ( phoenix send me the drawing of the adapter 26-0368 ) and have 2 metal rings laser cut. I order them with .250 pilot holes to be sure that they will be the good size before tapping it with 3/8x24 bolts. So i will have a better ( build not bought ) adapter and it will cost under $200 with all the hardwares. Since the flywheel will cost around $1k .... that $350 rebate for the adapter will be appreciate. The only drawback is that i will have .250" of setback instead of .130" because 1/8 of metal bolting the tranny around the bellhousing make me asking question if it will be strong enough ... so when in doubt make it stronger .... so this is why the increase to .250 thickness.