I supplied the engine and box with a lot of other bits for the supercharged micra in question "White Knight"
The box is from an E15Tand had to be extensively modded. Mods included new engine mount holes being made up, box dowels relocated to match the engine and a modified starter motor with adaptor plate made up as the starter engages the opposite way to the micra engine.( pull in versus throw out pinion)
The ET box is much stronger and has taller ratios than the stock box due to the diff ratio.
The micra CG13 in either turbo or supercharged form strips the gears in the stock box.

Well it would definately be the turbo box from the e15t not the normally aspirated one. If its a comment thats passed through the grapevine then maybe no one knows.
Feral would know for sure.
Try him at datrats.com.au he has cg13 performance stuff also.

ok heres a question for some tech heads
if a E15 goes close to bolting up to a A series box as posted
does that mean that while surfing micra pages and they said that a ET pulsar box is a upgrade for micras DOES IT HAVE THE SAME STUD PATTERN