302 heads

yeah theyre crazy high. ive read that porting sticky on here a couple of times. I think I can do it. im not afraid to try .but what ever is best bang for the buck, if I do end up running across a 360 on the cheap some how (ive found em around here for $400-$600 and theyre smog motors seems high to me for a core but I may be wrong anyone that knows feel free to chime in, im always open to suggestions and thoughts) anyway, are there any necessary changes or parts I need to change from 318 to 360 like different mounts, flexplate, convertor etc.

Were you planning on rebuilding you 318? Does it run good now? Do you have headers, dual exhaust, & 4 barrel? Those are good places to start and will increase performance. I think speed-pro has some better than stock compression pistons.