thanks jonathan ! thanks gator ! gator , the parts used are stock kit parts. monogram 1/24 f-350 dually . a second kit was used for the second axle and suspension, and the rear frame extension. I shortened the front springs at the front drive axle, I placed the second set so the spring shackle for the rear was connected to where the front ended. the tires are also stock kit parts, they look like the same tires used in a lot of the monogram muscle car kits from the late eighties/early nineties. goodyear gt radials. hope this helps !