I don't think Geoff can get to a good computer at the moment.
I don't think they can be spun backwards, Just get a spacer made up for the outlet so it sits flat ?
The W58 comes from JZA80 2JZGE supra's and a few others.
I'm using a T-50 behind my 4AGZE and it should be fine if i respect it. If you drive around clutch kicking on every corner it wont last long.
http://www.brisbanemotorimports.com.au/transmissions.htm
4AFC is the economical twincam, More power than a 4ac but less than the 4age.
1st cam is drivin by the belt and the 2nd is drivin by a gear from the 1st cam, A very cheap engine and i rate them highly for a daily engine.
;)