NEW HEADS AND USED INTAKE SETTING IN MY SHOP READY TO IN STALL BUT WANT EVERYTHING I NEED FIRST BLOCK IS STOCK 80,000 MILES GETTING A CUSTOM CAM BUT NEED SOME INFO FIRST DO I USE STOCK INJECTORS OR UPGRADE? FULE PUMP? MAS AIR? ANYTHING IM FOR GETTING??? SHOULD I FRESHIN UP BLOCK? SHOULD I LET THEM PICK MY CAM THANKS FOR ANY HELP