Ah, if you've got a 6 pot chassis you're a bit stuck for easy options, I'm think
In a 4 pot chassis a 200TDi drops straight onto the original chassis mounts using the 2.25 engine mounts bolted to the 200TDi block.
In a 6 pot chassis the gearbox is about 3-4" further back so when the engine is mated to the gearbox the engine is 3-4" further back as well!
It can be done - it's what is in Patrick's Carawagon, but we did weld the disco mounts to the chassis, I think about 4" further back from the 6 pot mounts.
The engine is very close to the bulkhead, but the only problem that has caused for us is getting to the lift pump and the broken spill pipe on the back of the injector pump - things are a bit tight.
If you don't want to weld the chassis, I think your only option is to suspend the engine in place with a couple of bolts to the gearbox, then fabricate some mounts to come forward to the 6 pot chassis mounts, perhaps modifying the 4 pot engine mounts
The only other options, I think, are to move the gearbox forward and use 4 pot propshafts, but that means cutting the gearbox crossmember and relocating it to where it would be on a 4 pot.
Sorry Jerry, but it's weld the chassis or fabricate some mounts - no easy bolt-on options as far as I know.
In one of my project 6 pot Carawagons (arrived with no engine) I intend fitting a Defender long-stick gearbox, modifying the transfer box for part time 4WD. As that gearbox is longer than a Series it will bring the engine further forward, though I'll probably have to get custom length propshafts made up and move the gearbox crossmember.
Have fun, and let us know what you decide to do - and take pictures
Cheers,
Robin.