Hi Gordo,
You are lucky to have someone to help you, of course you have the little one for company, that helps a lot.
I take it the D90 hood is longer than the SIII? If it is that should help with room. Are you going to an 88 inch wb?
I changed the wiring because so much of it was cracked and years ago I had a small fire at the rear in the harness to the passenger side lights. I was up in CA and did a repair by flashlight and never made it right. As you know without the EFI or any computer controls or sensors the wiring is easy, only lights, ignition, and charging. If your SIII wires are good, all the better!
I think the aluminum radiator cost me about $240. If you can fit a D90 radiator that could be easier also. I don't know how it compares in size.
Paul
