[red82gt]

The quad shock setup came out midway through 1984. All 85 and up 5.0's have them.
As to why yours doesn't have them, I'm lost. Do you maybe have a lincoln Mark VII 8.8? I'm trying to remember of the 87-88 5.0L T-birds had an 8.8 rear? Measure it's width and compare it to your 88.