Mopar 8 3/4 or Ford 9?

Yeah I'm not trying to finish this car ASAP. I'll be taking my time and making sure everything is done correctly.

I didn't know the Ford Explorer is a 5 x 4.5" bolt pattern. If using those parts what housing ends would I need to buy? The 8.8" Ford ones?

I've been thinking about a 8 3/4" and narrowing it. In fact I have found a few semi local with 323 gears and a posi, so if I got one of those I'd have the brakes and the center section. All I'd need to do would be narrow it and get new axles.

Riddler