Laying 4x4 Sheetmetal on a 1990 Mazda with 22's

Does anyone know if there is a difference in 2x2 and 4x4 bed height on an extended cab mazda? Most that I have seen have had 2x2 sheetmetal. With my 22's they stick over the top of the bed about 3 inches. Truck has been SFBD laying flat rocker.
Spec:
Wheel 8.5 x 22 +35 offset
Tire 255/30/22 (smallest I can find)

Nope, same bed height, just the flares over the wheel wells are different.  The beds are also the same size once you get past the body line.

you dont get out much huh...there is a mazda laying on 4's not sure but i think it was bodied

and also the make a 25/22 somewhere

smallest 22 inch tire is 235-30-22 as of right now.  The mazda on 24s is laying frame, not body.  DIB did build a mazda that layed body on 22s. 

Its alright Tom, I forgive your smartass remarks  My mazda with a 4" bd has maybe an inch to go on a 225/40r18 tire.  

---------------------------------------------Originally posted by ahabsmallest 22 inch tire is 235-30-22 as of right now.  The mazda on 24s is laying frame, not body.  DIB did build a mazda that layed body on 22s.  ---------------------------------------------The mazda that DIB built only lays pinch not flat rocker. The crazy thing is he still has a good 11/2 to 2 inch before the tire comes over the bed. Cutting the pinch I only lost like right at an inch maybe. It is agrevating the crap out of me to the point I want to sell the 22's and put 20's on it so I can finish the truck.