Will shortly be starting my first rebuild on my 350 out of my 75 Sprint. Ordered some parts and they should arrive anyday now. Decided to go with the Comp Cams K12-234-12 xtreme energy cam w/lifters kit which also includes new valve parts. Also ordered the small block chevy rebuild kit from Enginetech. It includes full gasket set, all piston rings, pistons, timing chain set, oil pump and all bearings.Do i need to use new head bolts or can i get i get by with the old ones. Might just ordering new ones. Is there any other bolts that should be used new ? Which is easier pull the engine by itself or engine and tranny together ? Also bought the book How to rebuild a small block chevy. All advice would be appreciated.