Atta boy, Ed! That thing is really hauling the mail.

Ron, all cars have to use the stock rim diameter:

14.00 TIRES AND WHEELS AND BRAKES
14.01 Wheels must be correct*, including correct* diameter, width and material.
Note: Width may be upgraded to a maximum of 6”, if the correct* wheel is narrower than that. Reproduction wheels OK.
14.02 All 4 wheels and tires must be same size.
Exception: Mopar TA Challenger came from factory with G-60’s on rear and F-60’s on front.
14.03 Original equipment reproduction bias-ply tires only. No soft compound tires of any kind are allowed. Retread tires are not allowed. Any car is allowed to upgrade to a maximum size tire of G-70 of the correct* wheel diameter. All cars that were originally available with a 60 series tire can upgrade to a maximum size of G-60 tire of the correct* wheel diameter.