clutch thrust bearing

[Reckless Rat]

On an Ulster rep your question depends on how the car was made and whether you can access the bellhousing bolts etc from the cabin. The gearbox on a Ruby series car can be removed from inside but earlier models require the engine and gearbox to be removed as a pair and then separated on the bench ( which personally I prefer to do rather than squirming about). I doubt you'll be able to remove the gearbox from below as the front crossmember and radius arms are in the way.