You would need to use the 53 bed blocks because the rear crossmember has a different height metal mounting area. You'll also need to use the 53 running board aprons as they are taller and match up to the 53 bed. The fenders will transfer over with no modifications.


"I always win." Working mainly alone I do not let my trucks win a war. Maybe a battle here and there but never the war.

Robert
55.1 GMC 450 COE
51ish GMC Suburban