mark 6 roller cam will fit i would used the marine take out cam thats less then 50.00 then buy the retro rollers lifters . hold down plate .mark 6 timming set .right push rods. not a hard job i done many. it may not have the want a be big cam sound . but will run like a hot poker was up its back side it a 330HP cam and has some sound if you did want to go cheap roller cam but you did not ask