yes they do.having said that,you'll probably have troubles.i know of at least one sunny with a stanza diff,& a l20b as well.it was a friends race car.the borg warner diff's from later stanza's also fit,dragongoose from qld had one in his sunny coupe.also,some stanza's have rear sway bars,grab one of those if you can find one,that'll help balance out the understeer.