Kiebayless

Hey everyone I'm new here and need a little help. So I need help figuring out what size cam to put into a 4.8. Only mods so far are, cai, gutted cats, catback, tune, and swapped to 4.73s with limited slip(g80 I think) next mods are throttle body, headers, stall, nitrous, then cam. My goal is to build the 4.8 and eventually swap all my parts over to forged 6.0 stroker. So what bigger cam would work in the 4.8 and a 6.0 with nitrous?