Tires almost hitting front of wheelwell

I need to move the rearend back 1/4". Can I space the front hangers backwards to achieve this? I could cut up some shock plates and use those I think.
Yep a spacer sounds a lot easier than drilling and welding, and I would use the same bolts they should be long enough.

I done this a lot...one spacer A-ok with the factory bolts...with two spacers, I felt it needed longer bolts in the hangers...just JHO.