Quoting galant1517:
Cylinder head guy said the head is ready. YES!!!!
I have a another question. This is going to be a matter of opinion. Who, given the opportunity, would take the time to cut the old, brittle, faded wire loom off of the harness and replace it? I've got atleast fifty feet each of various sizes (in black, not red or blue or some crap) and a big part of me wants to do it, but another part of me says "what a PITA, is it really worth it?" So is it really worth it? I have to partially dig into the harness anyway, some connectors are broken or missing, and I'm swapping in the "quick release" injector clips.
I haven't done it yet but I have to say yes go for the wiring harness rewire. Hell, if you have the engine out of the car its easy to get in there.
Only part that is a pain is if you still have the dash in.
DR1665 passed along a good idea to me, hope he doesn't mind if I pass it along, get a large flat piece of wood, like 1/8 of an inch thick by like 4 ft by 4 ft and drill some screws into it to the shape of how the harness snakes and then just mimic that with new wiring. Of course label all the clips and then label each wire end and then clip and transfer them one by one. Who knows, it may not be as bad as you think and much like anything with these old cars you will probably be glad you did it after you are done because honestly, that wiring bit is probably the most tedious part of rebuilding one of these cars.