need some help for military friend
 

ok, so new to this site. i got a close friend whos in the navy now and his TDI golf is parked. i wanted to do some work to it since it needs it bad. its a MK4 that would be 03 i think.. he knows more about it than i do. but while hes out for his term i wanted to surprise him with his fixed and painted prized golf.

it needs to be painted i got that covered and some other minor work to it needs to be scanned. but i wanted to hop it up a bit nothing to spendy since im tight on cash and its nothing he can know about, all i would like to do is

-an intake setup, improve flow to and from the after cooler since the plastic tubing looks kind of restrictive.
-def. an EGR delete since i or him never want to clean the intake again.
-a cat hack with 02 delete
-and anything else that would hop it a bit without killing the mileage

im a diesel mechanic for heavy equipment so the diesel world is nothing new its just the automotive part i dont like. but if anyone can help me out here i would much appreciate. oh and all this stuff cant come with engine codes lol