Another vote for M&H but you do have to make your initial order through Year One.

If you have a 67 Hemi "B" body you will find that the wire for the oil pressure switch is in the wrong location. It comes located on the leg that runs to the front wiring harness on the drivers side and not the one that runs across the firewall. Additionally, the tach wire will be the wrong color (Grey w/black tracer) and run to the bulkhead connector for an in dash tach.

I worked with Darrin at M&H to fix my harness. They were great to work with. I sent them my old harness and some photo's. The new harness was returned with the problem solved. It appears that the blueprint is in error for this particular application. It added about 2 weeks to the process due to the Thanksgiving holidays. More additionally, you will be requested to pay for shipping. This is a small price for the service they provide and well worth it.