Will a 15x10 wheel with 7.25 backspace fit a 1970 Dart with 8.25 Rear

I'm getting the cart a little ahead of the horse here and would appreciate any info you guys can share.

Normally I'd measure measure measure and then go looking for a set of wheels but I've run across a decent deal for a wheel on my wishlist and won't be able to measure the wheel opening for a day or so.

I'm 99% sure a spring relocation will be required but I'm not sure about a minitub.

Would this wheel wearing a 275/60 tire fit the stock wheel well with relocated springs? I'd like the car to sit down over the tire and not have it jacked up in the back and sticking out.

Like this: