JZZ30 and JZA70 both had R154 gearboxes. JZA70 was internal shift, and depending on the year, JZZ30 will have different shifter positions - early was internal and about an inch further back than JZA70 and late is remote shift position and a bit further back.
JZA80 non turbo was Getrag (rare and 6 speed) or W58 (most common) with remote shift and JZA80 TT was Getrag only
Bookmarks