The only item that I know anyone in the 7.3 crowd goes for is banks IC spider for the OBS trucks.
They buy the kit and take the spider and ebay the rest cause the 6.0 cooler is better than their overpriced name junk.
Banks himself has said that PSD's are junk.
If your going to get an SD model, just drop that in and dont mod it. 120 is plenty.
But with the OBS being such a low voltage, modding them will make the injectors sound a bit snappier.
Though I have never noticed any effects from it.
I guess I missread that. You want to drop the 7.3 in a bronco.
The Centurion guys took a quad cab short bed and threw on a bronco back with a few modifications.
I've had your dream as well though.
Go for the early 80's or late 70s, they are best looking IMO, but you'll get a solid product as...
My best suggestion is to find some pictures of the Centurion Conversion and try and copy them the best you can to make it.
That will set you in the right direction.