I have an eg with a b20b4 with a cable trans out of a 91 teggy I need to know what axles to buy I wasn't sure if the dimensions the same as the b series hydro trans

 

Yeah it's the same. Cable and hydro LSD I know first hand are the same so axels must be the same.

 

The right side axle will work either way, although the '90-93 axles are just slightly shorter. The left side axle chosen will depend on which mid-shaft you use... cable shaft uses the '90-93 axle and the hydro shaft uses the '94-01 axle.