Id say just keep the stock cam in for awhile using the supercharger and put the money you were going to spend on a cam and heads into the trans and rear end.

 

Get a set of WCCH heads ---------> (sponsor) These guys have made 440rwhp with GT2-3 cam Richard's heads and MP112 on a 5.3. Of course ur tranny will be on borrowed time if u do ANY more than just the blower. No matter what u shud add a shift kit ansd servos to the tranny and ull be fine. As for the rr end...drive it till it blows, but below 375rwhp u shudn't have to worry. The MP112 will give u ~340-350rwhp. Personally, if I did it all over I'd go TURBO!

 

Thanks Guys for all the info