Outer Limits 4x4 Board

Can anyone tell me how different the 3.0 V6 and 2.5tdi gearbox's are??

I have someone wanting the gearbox out of my rolled doner but it is to go into a diesel vehicle and mine was a petrol...

Do the bellhousings come off these?

Pretty sure the bellhousing is cast with the rest of the case as one piece. Will put my head underneath in the morning.