Join Date: Feb 2013
Location: Aussie in Sweden
Try using a pair of ratchet straps running perpendicular to each other? So using the photo on the left the example, put the first strap running across the gearbox from left -> right in the photo and tighten it firmly but not fully. Then run the second strap going from top of image -> bottom, over where the flywheel/clutch goes and tighten it firmly. Then adjust both straps to get the gearbox reasonably balanced?
From here you could, if you have the resources, build a makeshift cradle that runs parallel along the edges of the gearbox, maybe 150mm - 200mm high, to ensure it doesn't rock about during transit? Just grab some loose bits of wood lying around, get some nails and hammer them into the base you made. Then take it out in the car, drive around over speed bumps etc. and see if it holds together?
Can always ask OP to mail back the straps to you after he receives it
2000 Alfa 156 Sportwagon 2.0 TS CF3
2002 Alfa GTV 2.0 TS CF3
1983 Porsche 944