The small block mopar is the easiest to stroke out of the big three. With modern I-beam rods NO notching is required unlike Ford and Chevy. A 4" crank drops right into a SB Mopar where as on a SB Chevy you have to do a lot of grinding just to get a 3.75" stroke crank in there. Guy I work with is building a 383 SB Chevy and he has to go with a smaller base circle cam to clear the rods. Mopar puts the cam up high in the block so no problems there.