Hi there I have a 49 3100 with a mid-60's SBC 283. It has be converted to 12v and has a Mallory unilite distributor with vacuum advance. I can tell the guy before me did some sketchy repairs to the distributor internally and it now fails to deliver a spark. In addition to the unilite distributor, I am running a ignition coil and resistor. I am wanting to swap it out with something comparable. Does anyone have any good suggestions or tips? Thanks