Tire size and info.

You've only got 12" of well to work with and less than that if the spring is in stock location.

Most true 28x10.50's, 10.50w's or anything else, are in the 11.5-12.0 section width range.

Here's a 70 Dart that I'm trying to put 275/60/15 et radials under. Has a 1/2-3/4" hanger relocation. It's TIGHT! Maybe have 5/16" on each side of tire to well.