1970 duster street & strip build 440 4 speed

well for all the guys out there thanking about moving leaf srings to frame just go ahead and cut both sides of frame what i found was the frame tapers from top to botom of frame rails the top in a 1/4 of a inch wider than bottom so if you try to butt the new boxes to that it will be at an angle so only true way to make it strait is to cut both sides just my 2 cents is the other way will work but you spings would be in a bind