when i put my hemi in my challenger which was an original 440 car i left the stock wedge k-frame in and used the schumaker mounts.

i had to buy a b&m flexplate since my crank was an 8 bolt unit and i used the 440 convertor and trans.

when i built my engine i had the rotating assembly balanced and i used a stock forged crank (thin) damper from a 1963 361 that way i was able to use all of the 440 pullies and brackets.