[406 Q-ship]

I have used the Crane XR1 (simular to the Pentronix) and HEI's. Here is my opinion, the HEI is a cheaper change if you can find used ones in the "pick and pull" than one of the kits. The better side to a points conversion kit is that the advance is stays the same. Hei's came out of the emission era and have a very broad advance range that it is more difficult to use on a performance engine. A performance engine will require more intitial timing, with a HEI it will end up with too much total advance unless you can find someone who knows the proper way to set them up. On a stock engine the HEI is the cheapest and best way to go, you have a bit of cam and need 12° of initial timing then a Crane XR1 or the Pentronix is the way to go.