I had m10 bolts, really don´t know why, and it´s not that big of a problem... it´s easy to solve i accept the trouble since i´m putting it on a box it was not intended for...
I´m sharing this info for all EU/US guys that might want to do the same, and drop it on a 70A.
The gearbox is now closed, and the diff runs freely, all seems nice and tight, let´s see if the driveshafts go without trouble...
This clearence during the assembly made me worry a bit, but it´s fine...
Hope to put the gearbox in the car in the following weeks, can´t wait...