8 bolt crank flange

I need help, I have a 3.51 stroke Mopar performance Crankshaft that has the 8 bolt flange. I have 2 flywheels a new billet steel and a Crane aluminium that both have the 6 bolt, and neither one of them will match up to this Crank. where can I go to find the correct flywheel for my application? I know this is a older crankshaft, but it is brand new, and would like to use. Let me know guys if anyone has one that wants to sell, or where I can find one.

Thanks for all info and comments,
T.J.