I put one on my 67 Coronet (using the MP distributor) I had and it was an improvement over the orange box, especially hot starts. I used a coil off of a mid 90's 4.3 Astro van (nice flat mount). Use junkyard coils and HEI modules if you can, the parts store stuff is junk and doesn't last. I think DUI makes a good HEI module if you want to buy a new one, but for coils, I'd stick to the junkyards