Yes, that backspacing will work for front and rear.

As far as tires go, for what size rims? I don't think there's much point in buying new tires for your current rims since you'll just need to replace them when you get new rims. Once you decide on a rim size, I can recommend something far sportier that will still work in the rain. They don't necessarily need to be "all season" unless you drive in the snow. "All season" to tire manufacturers means anything from summer heat to snow in the winter.

 

It snows in Seattle....sometimes....normally though it just rains ICE.

Chart for wheels and tires combos and how they might fit on your car.
http://www.dodgestang.com/cgi-bin/pr...0Wheel%20Chart

 

Get a set of MT Sportsman S/Rs on 15x8" wheels and you will have plenty of traction with stock suspension. Adding traction bars will help you pasted that. My point is a good set of performance tires will get you the traction you need without tubing or jacking too much with your suspension.

 

On a side note, has anyone seen or driven the new Mickey Thompson Sportsman S/T muscle car all-season tires? They look like a good fit for a classic muscle car.

 

i saw those as well, and i was wondering the same. whats the price on those bad boys?

 

I understand they are about $100 per tire.

 

They look like an alternative to Radial T/A's. The T speed rating does not impress me (suggests a high UTQG rating, which means hard rubber). Don't expect much traction from them. I'm kinda suprised you're getting enough traction from the S/R's, but then yours are really wide

 

Interesting thought about the S/Ts. I assumed being from MT that they would be softer than the BFG Radial T/As. The S/Rs are marginal for me, but a compromise between traction, handling, and tire mileage life. I get about 50% more miles out of Sportsman S/Rs than regular Sportsmans (only got 6k miles out of a set). The S/Rs being radials handle much better on the street than the bias ply Sportsmans. I can untrack the S/Rs on the street with a moderate launch, but never could blow the Sportsmans up...just waffle and wrinkle them. If/When I run this car on the strip more, I will get an alternate set of MT DRs to run on the rear. And yes, 10.5 wide does help minimize the embarrassing cloud of tire smoke when the stop light turns green .

 

I'm getting 15x7 in the front, and 15x8 in the back

I have SSBC discs in front, 620 coils. In the rear, I've got a 9" moser rear end, 5 leaf mid eye springs, and wilwood dynalite pro discs.

No modifying has been done to any of the fenders

 

I'd recommend rolling your fender lips for optimum clearance.

Look at a set of BFG Traction T/A tires, P205/65R15 front, P215/65R15 rear. Traction T/A's will handle very well, work very well in the rain, and will be stickier than what you've got. If you get lucky, they may actually fit under your car without rolling the fender lips.