[dsraven]

here is a pic of the frame dimension for stock. the lowered trucks usually go an inch ahead for the asxle centreline. it depends on the tire size and how low you go with the suspension though. I hate to say it but it would be best to mock uop the body on the frame and go from there to see if the front wheels look ok in the fender openings. I attached a few pics because the printing is hard to read. the measurements go off the front of dash, which is the firewall. you can figure it out without the cab on though