No idea why it cracked (possibly God getting revenge for several years of sinful living), proving quite hard to find a replacement (except for a new one from saab, which would cost about a bazillion quid....), but still, I am determined that this will not be the death of the car.
Also, taking from the other post which was about gearboxes:
"Version 4:
GM75701
'93 CST, CSET and Aero
3.61:1 final drive with *needle bearings* behind spider gears
Front dipstick for level checking and filling.
Large inner driver.
Version 5:
FM751xx
'94 CST, CSET and Aero
3.61:1 final drive with *needle bearings* behind spider gears
Reverse-gear synchro, and revised synchro and selector function throughout.
Fill plug, level plug, drain plug, no dipstick.
Large inner driver.
Version 6:
FM751xx
'95-'98 CSET and Aero
3.61:1 final drive with bushings behind spider gears
Reverse-gear synchro, and revised synchro and selector function throughout.
Fill plug, level plug, drain plug, no dipstick.
Large inner driver. "
According to this I would need the 'Version 5' 'box but can anyone tell me if I can get away with using either 'version 4' or 'version 6' on my car or will they not fit (just so I can widen the search for what parts will do) ?
Car is a '94 9000 Aero.
Thanks