I have always just run my rebuilt stock distributor and Petronix module with flamethrower coil. (See other specs on car below) I am pondering an upgrade. Would it just be a waste to get new billet distributor without new electronics (like MSD6A)? Would it be a waste to get new electronics and keep distributor stock? How much difference would there really be from what I have now to new electronic ignition and new distributor combo?