hey guys...i just got my tax return check....so i want to do a good tune up on the truck and a few mods....need to know what model number is it for the MSD distributor cap and rotor.....also what weight of gear oil goes into my rear diff...and as far as the mods...wheres the best place to get the tow mirros and a superchip programmer.....also my rig is a 02 1500 4x4 with a 5.9 gas in it