I installed a repop hemi K frame w/ Shumacher Poly Lock mounts when putting the hemi in my 383 RT Challenger. Don't know if the inside dimensions of the bay are wider than the Cuda, but my stock hemi valve covers cleared just fine. Only problem was with the stock power steering box being only 1/16" away from the TTI headers. I had Firm Feel make
a J body stage 2 box & it clears fine.