I had no problem installing 295/50-15s on 4.5bs 10s into the rear of my lowered 68 Barracuda.
After I moved the springs over with the offset kit, and stood the tires up in the tubs, I just measured the distance between the mounting surfaces and ordered up a corresponding banjo and axles. I ordered mine a tad short in case I had to offset the diff either way; so I have have a couple of spacers installed . Nothing rubs no matter how badly I abuse her.
That's in a 68 Barracuda.
I thought the Dusters, Demons, Dart Sports, and Barracudas all had the same tubs, .......
BTW
those same tubs accepted 325/50 15s by banging out a few highspots on the inner tubs and trimming the lips. They are good in a straightline; but I can't fly around the turns any more, with them on.
BTW-2
When the rims get that big, they are awful heavy. And you feel that weight with every bump in the road. I swapped off the steel wheels in favor of alloys, which were about half the weight.
Keystones are even heavier than my Wheel Vintiques Rallys, which are now in the BFG-DRs. On the car are vintage kidney-slot Ansen knock-offs, oh yeah; ET-IIs
Another thing about the 295s is, that in order for them to wear evenly, I have to run the tire-pressure down at 24psi. This causes the rear to steer a lil funny, as the sidewalls roll under. It surprised the chit out of me when I first experienced it. But I grew to rather like it. Lightweight alloy wheels and 24psi, is a very pleasant combo for a streeter.
The contact patch of a 275/60-15 is about the same tho, and I ran those at 28. But they didn't have enough sideways rubber to keep me out of trouble. But they were pretty good in the point and shoot.
