just remember the sierra box is not the strongest especailly for a g13b usually the vitara box is used in Jimnys and Sierra with a lucky 13 adaptor or just retapped bolts to suit the g13b as the g16b is a little wider.
Ive been trying to source the USA 2WD vitara rear section of the box so we can use it here in OZ but gave up as they want a fair bit for them or not willing to separate the box.
"The geo traker transmission 4 x 2" on Ebay.com if you are interested
http://www.ebay.com/sch/i.html?_odkw= ... ion+manual+4+x+2&_sacat=0

Lucky 13 adaptor http://www.trailtough.com/index.php?p ... =com_virtuemart&Itemid=53

toyota W series adaptor to G13b or g13bb etc
http://www.rock4xfabrication.com/ringr.htm

A few pics of the 4 x 2 box
http://datsun1000.com/TopicView.asp?TopicID=479

the lever can be modded to be really forward where
the right foot points to a lid section right at the
start of the rear section of the box in the pic.

Thanks Dave,

My internet speed is atrocious, a google image search is even difficult. Thanks for the help.

Does anyone have a good photographs of the rear of a G13B engine (flywheel end)? I'd like to take a look at the bolt pattern & starter location.

If you have some dimensions too that would be gold.