Hey all, I have a brand new MSD 7531 Digital box, I am going to install it, and was wondering, can I use a MSD 8207 Coil....it says MSD Blaster SS on it ??? Or "MUST" we use an 8251 ??? Only reason I suggest the 8251 is it will see a little bit of street use.....8207 says its good for 40,000 volts .....8251 says its good for 45,000 volts ???????? HELP !!!