Yes as there the same turbo, although I believe the BT Escos is a .63, if so then it may be better to go for a .48 (Less lag) this is the most common choice.

Standard regulator if fine, by no means adjust it, the only reason you should have for wanting to adjust it is if the engine management software has been written for the non standard pressure which is rare, so to answer your question it's dependant upon the software you are running!

Martin