I plan to use a 1.9D N/A cam as I understand that is similar to a TD 'performance' cam, and keep the BX pump, but have a few other questions before I take the plunge.
Firstly, is it worth it? An extra 2 bhp and 20 odd lb ft seem not too much more, although a bit more torque off boost would be nice. (Having said that though the sudden transition from no torque to bags of it is fun!)
Secondly, does the Xantia exhaust manifold/turbo mate up to the BX exhaust system? And will the inlet manifold mate up easily to the BX intercooler?
Lastly, please under no circumstances bet me that I can't fit a 2.1TD engine in there.

