I have a stock 305' with no muffler or cat.i want to change out my stock cam so i can get that classic muscle car sound.what do you guys recomend.and would i have to change any thing else in the vavle train like lifters,rockers,pushrods,springs.im on a kinda short budget.i have a stock torgue converter.so i know i wont be able to get a wild cam.help a new kid out.