3sp (all, to best of my knowledge) are 2.31:1
transitional 4sps 1974/5 are 1.99:1
regular 4sps 1974-1980 are 1.96:1
1981-1990? 4sps are 2.2X, there is a change 34mm to 38mm idler years.
1983+ H55's are 1.99:1 ) look for 38 tooth low range
autos are 1.99:1 (just had to help OH a 1989 FJ62)- has...