Hi Guys, I did originally buy a 56A dog box for it, but after realizing it wouldn't hold the power I sold it before using it.

This gearbox is an RB20 box (71C). They have double synchro's on 2nd and 3rd and a lock out on reverse. I did put a 1st to 3rd close ratio gear set in it made by Kameari in Japan.

I am now thinking about putting a Samsonas 6 speed dog box in it. A very good race box rated to 1200Nm but $$$! If I do I will be selling this box(obviously, Its been converted to suit an A series engine)