I took a good look at your pics before I attacked my wheelwells. Very handy, and very much appreciated.

 

I had 315s/275s on my 95 camaro only you have to pick car up by differancial. Part of the body gets in way of rim. It fits very close to body but you can. My car is a t top.

 

That's the edge of the jounce bumper bracket. All you need to do is cut it back a little as shown in the picture I linked. Not sure why you wouldn't do that, just to eliminate the risk of it catching the rim on hard cornering, or if someone other than you jacks the car by the body.

What to you plan to do when you get a flat tire on the road, and don't have a jack that lifts the differential?

 

I have 315/30/18's on the back of my Trans Am vert and they fit fine, a little hammering, a little cutting and some fender rolling... perfect. The wheels are 11" wide with a 50mm offset, the tires are Pilot Sport Cup's they run about a half inch wider than all other 315's including the drag radials.

Just make sure you have a adjustable panhard rod!!

 

Sure is handy! I think most of us 315 guys have 'em.