5.9 magnum cam swap

That's why I was gonna go with the whiplash if I could get it in long snout because it's about the same price as the retro roller or new cam from others. Im still unsure where the prob is with the 9.1 mag and that being too much compression for the whiplash cam, is it going to have valve to piston issues? I just don't want to make any mistakes as roller cams are pricey and so is a complete rebuild. I'm not looking for a real fast street car, just want it to perform decent and sound really good.