wider rear end on standard rb5

[jon kedge]

Have been racing this car for 2 years and it's very narrow in the box at national meetings on the rear.I have an old zx5 with wider wisbones for the rear and what else do i need (drive shafts,rear carriers etc etc )any part numbers would be helfull,my zx5 is a ready to run but have spare wishbones etc etc doing nothing,i think i have a proline conversion for the rear but it's standard length for the original edition rb5.could i use and zx5 parts without modifying the car..