http://musclerodzstore.com/index.asp...ROD&ProdID=689
The American Autowire Kit in the link above is the best on the market now, bar none. Cheaper than M&H by several hundred dollars, 69-72 chevy or gmc specific unlike the painless kit for the same money. ez-kit is a bare no nothing kit that you have to make a hundred trips to the auto parts store to get all the little crap you forgot on the last trip. Start counting fuel and wasted time, the cheap price does not seam that great anymore.
want hei, done, want internal reg alternator, done, want to use aftermarket guages, no problem, using vintage air, covered, modern radio, fuel injection, all are doable with what is included in the kit. Not to mention new ignition switch, headlight switch, and dimmer switch.
Couple things you do need to know. If you are using factory a/c, you will have to use the Factory Fit a/c harness as the kit only provides a power source just as the original dash harness does. Wanna run the kit in a 67-68? You will have to convert to 69 and later e-brake as the new fuse box interferes with the original ebrake cable firewall pass through. You would also need to hardwire the 67-68 park lights as no provisions for them since the kit is 69-72 only.