Projects 52 chevy p/u on an s10 frame

im building my truck currently and finally got my 4 link and and air ride all mocked up in the rear. i put the bed on the other day to see how it looked and found my problem, my drum backing plates are less than 2" away from my bedsides. im running an s10 4x4 rear axle from a 95 blazer, i was told that was a great fit. dont no if thats for trucks that sit a taller height, mine currently sits all the way down on the fenders. any help would be greatly appreciated. thanks

 

how wide is the rear?

Im using an 96 explorer rear(59 3/4") which is narrow for a truck. I am going to run reverse steeelies with a 2 1/2" BS to work it out right. i think the deeper dish will look good too.

 

im pretty sure its close to that. im thinking ill have to run reverse wheels as well.