budget build 360

12 valve pm sent.
Rumble what pistons if I plan at some point to use a 100-150 shot of nitros to make the extra hp that I lose from not being able to afford a stroker. If I run 9.5 or9.8:1 comp what cam should I upgrade to? I am buying a tcs converter 2400-2500 stall and a 727 built for 400-550hp. With the lower hp is line boring and decking the block necessary? My bro is willing to buy my cam for the 360 in his 69 dart

Don