1970 Ford Torino GT
 

What is the biggest wheel/tire combo that will fit?
I'm wanting to stay with 17 or 18's to keep tires more affordable...

For that question you may have better luck asking here

http://www.torinocobra.com/forum/index.php

or here

http://www.fordmuscleforums.com/torino-pages/

On my unmodified 69, 245 45 17 and 285 40 17 fit just barely. 8" 4.5" bs front and 10" 5.75" bs rear.

Thanks for the help!
Exactly what I was looking for!