I am finally getting the last few items together to complete a mock up of this new stroker im building. Some confusion i have is which Ati super damper do i need with the jesel belt drive. From what i understand, it has to have an extended hub and be a 2 piece.

Anyone have the correct part numbers and i assume i will have to space out my alternator to get the pulleys to line up. Any help would be appreciated

About the combo:
400 stroker to 498. 13.25:1
Indy cnc325 -1s from Dwayne Porter
Comp solid roller at 726/713 and 272/276 @50
Indy single plane intake with either 1050 or 1150 dom. (Prob 1150)
68 b body @ 3900 lbs with jerico 4 gear and 4:30 rear gear