Wheel Backspace '73 Challenger

[MJS73]

I have a '73 Challenger with the stock 14" Ralleyes. Can someone tell me what the bolt pattern and backspace is for these wheels?  I'm looking to go with 15x7 Ralleyes or Torq-Thrust Ds with 235/60/15 BFG T/As in front and 245/60/15s in back.  I'm almost positive this combo will fit without a problem, but I want to make sure I have the bolt pattern and b/s correct.

Thanks,
Mike

[422STROKER]

Do a search or look in the Wheel and Tire combo section.  Or wait for some one to chime in!  4.5 bolt spacing  4.5 backspacing rear 4.0 in front should work also 8" rear  7" front(rim).  There are many variations in the rim size/backspacing isssue but the bolt hole spacing is def 4.5!

Tom