I know you've probably heard this before, but, I would really consider fitting a 200 TDI. I'm not going to make negative comments about the 19J, as I really liked mine, but I changed it to fit a V8 but ended up 200 TDI to run with a 1.2 transfer box. It's better on fuel and more powerful. The Disco lumps are still reasonably priced, and for the sake of a few low cost components, it's an easy swap. I think a 300 TDI would be a more 'future proof' swap in view of spares availability, but that's a little more involved. Note that you don't have to weld on new mounts for the 300- Steve Parker does a bolt-on mounting.