You need to cut a hole in the floor and you require a 4sp console. There is wire harness I believe in order to facilitate the reverse lights. All the bolt holes etc. in the frame are there waiting for you. You jut need to get the pedals linkage pieces from a donor car or buy new.
What kind of 4sp are you thinking of putting it? Stock M21/22 or T-10?
Engine Test Stand Playlist: https://www.youtube.com/playlist?list=PLwoxyUwptUcdqEb-o2ArqyiUaHW0G_C88 restoring my 1968 Firebird 400 HO convertible (Firedawg) 1965 Pontiac Catalina Safari Wagon 389 TriPower (Catwagon) 1999 JD AWS LX Lawn tractor 17hp (my daily driver) 2006 Sequoia 2017 Murano (wife's car) 202? Electric car 203? 68 Firebird /w electric engine 2007 Bayliner 175 runabout /w 3.0L Mercuiser__________________________________________________________