Someone offered to sell me a Mallory UNILITE electronic distributor for 30 bucks, but it needs a new module(?). I know next to nothing about ignition systems, so maybe somebody can give me a hand. What is this module, where could I get one, and about how much would it cost? A new UNILITE dist. from Summit is about 160 dollars. As far as I can tell, I will have to get an external coil. Will any one of the $20-$40 coils that Summit sells work? The dist. has a 3-wire plug. Is this even a good ignition?