Those slapper bars were on the 82 GT or maybe the other 5.0 cars in 82. On my 82 I took out the 3 spacers and snugged the slappers to the frame rails. Works no hop. The cars that have the 8.8 and quad shock set ups, I guess 85 and up?those bars were like a year and a half thing used on 83-84 mustang's i have an 83 gt rearend in my fairmont.
But i have a 7.5in..... oh well... took out 3 spacers from passenger side, less hop but looks funny.The cars that have the 8.8 and quad shock set ups, I guess 85 and up?