https://www.skspeed.com/msd-9254-ig...distributor-wires-coil-chrysler-273-360/ is the kit I got and the cheapest I've found. Only bad part is it doesn't come with a crank trigger kit. It works well for the money, wired right into all my stuff. Really fought back and forth with either the Grid or the programmable 6. If I was going crazy with my motor or messing with a two step a lot, I would have gone with the Grid. For all I need, even with nitrous, the programmable 6 works just fine. The MSD 7 is a good box, but I've had to repair way too many through the years and fight with some crazy cut and spliced in stuff to go with the 7. If you do decide to go with any programmable, make sure it's mounted somewhere you can get to it easily to plug into and a laptop with a serial port to make life easy.