Evan
The Magnaflow I found that was the best for my goals was the MF11255 It's still going to be loud enough for a good sound based on having the same size MF behind my 408 stroker in the Dakota R/T. I added resonators behind that one on the truck but I will wait and see on the 33 how the hemi stroker sounds since there is minimal room for reso's with my rear fuel tank.
It was the biggest that will fit in the 33 chassis in the factory location and had the best offsets for inlet and outlet
to minimize changes to the exhaust path. It also had the right size I/O for my combo.
HTH
Dale