I don't know why not. I have put a J type overdrive on an A type (TR4) gearbox, so it probably swings both ways. David Lylis 69 TR6 CC26160L 60 TR3A TS74461LO **************BUY Indiana Jones and the Kingdom of the Crystal Skull on DVD today! (http://pr.atwola.com/promoclk/100000075x1209326865x1200539441/aol?redir=http://www.indianajones.com/site/index.html)