Mark, I hear ya on the wiring harness deal. I think it's really cool how you rolled your own, and I would if I had your ability and the time.
I got a few more deliveries this week. The spouse is definitely tuned into this, what with all the stuff showing up for Tom recently. She doesn't get mad, she gets even. They are weird that way I guess, but this build is gonna cost me.
After researching the LS forum for several hours, I discovered that Doug Thorley headers were highly recommended, and I can see why. They are nicely finished with ceramic coating inside and out, and they are designed for these trucks - they fit perfectly with no notching, and there's plenty of room to get to the starter and not worry about heat soak. They are also completely above the bottom of the frame rail, so no scraping issues with these rascals.
Started to test fit the rack and pinion steering setup today. It's tucked up there nice for plenty of clearance. It's going to be interesting to see how the steering makes it way around the headers and the engine mounts.