thx Bill I have recently went COPS and haven't been thinking as you have. A great mod that I will do this winter, had this reg. sitting here for over a year!
Sean Morley (Morley's muscle) "[email protected]" sells them also. his info is on the forum's vendor list, just e mail him to get current price.
The cops sets are "Plug and play"
By the way, you can electrically check the coils to see if they are really bad. Cracking is possibly only cosmetic and you may caulk the cracks shut if you find that electrically they are ok. In my case i had thirty years of corrosion on the coil end of the plug wires. You can just snip 1/4" inch off to reveal clean wire and prob clear this up. I only did my cops because working on the front coils is such a ****** and I didn't want to remove the front wires and snip them because of the work getting to them. lots of info on the forum on how to check coils.