These T5s are "top loaders". The shifter mounts on top with four bolts to the housing. You can also use any shifter made for a F-body like a Firebird or Camaro with a T5. You have the version offered behind a 4.3 V6 powered '86 Chevy Astro or GMC Safari van. So your ratios are 1st: 3.50, 2nd: 2.14, 3rd: 1.39, 4th: 1.1, 5th: .73.
