cam and intake on 7.4l?
 

Thinking of putting a cam and intake on my 7.4liter 330hp. I got emi thunder exhaust with the stainless risers last year so it will breathe on that end, the rust coming out of my stock ones had me worried. would i see any gain with cam and intake or are the heads too restrictive? Wondering if i should spend the few hundred on a cam and intake or just save my money for a 502 crate engine in the future?