[jamescanoot]

If u change cams, you need to make sure the valves aren't going to hit the pistons, since performance cams have lobes that have more peak to them, the valves will be pushed out further and stay open longer. Can't just slap cam shafts onto the head and new valve springs with shims to fix it. Since your'e thinking about turbo charging, look in the market for new pistons, rods and crank shaft, bearings also while the engine is out get new core plugs for the block, real cheap to get and well worth it. Also lap the valves since that's off too so that it'll be less likely that you'll have a cylinder leak.