The Hydraulic bearings are the way to go. The JDM bellhousings are ridiculously priced. The initial design I made up is reliable as it uses a factory SAAB bearing. The mondeo, and LS1 will fit also, but seem to require more tricky machining and/or the cost is a bit more. The last unit I have sourced doesn't require any machining at all, but I have heard some rumblings about quality. I have'nt really tested any of the units enough to be confident they will be perfect for a great deal of time, and until I am confident, Im not going to recommend any of them. The SAAB unit is used in various configurations in clubmans with no complaints. The prototype I made for the SAAB unit was machined out of 2000 series alluminium, so was only really suitable for testing. The design is a simple bolt on and uses the original oil seal etc. I have some time off after next week, so I will test all units and let you know what is the best option.