Cummins-907

It does run on a lot of back roads and slide some of the corners and highway use. It sees track days maybe 4 times out of a year I would like to build it up a little bit and have fun with it. The only issue I have with it is the bov stays cracked when cruising around 70mph and I try to stay out of that

It's a 98 R34 sedan with 51,XXX km on the clock extremely clean no valve train noise and not a single issue with it. I'm just looking for some more power and dress up the engine bay a bit so it looks more presentable. Antilag was an idea for quick spool but I don't want to ruin it so I won't go that route

Picked up a 98 skyline GTX-T with the RB25DET paired with a 5 speed manual. Looked up the Vin says 25GT-X Turbo (series 1). -First question is what is the best way to find out what series RB25 it is whether series 1, 2 or NEO it's missing the plastic cover on top of the engine and I've been told it is a NEO I'm looking to make 5-600 hp to start but the more the better its going to be a street / drift car with the occasional drag events for fun What should I be looking for to achieve this goal, a build list would be great and helpful. So far I'm looking at -plazmaman short runner intake 6 or 12 injector -artec exhaust manifold with probably a Garrett 3660 reverse mount (Would like to do antilag on a button with a bigger turbo) -haltech 2500 ecu with the screen the replaces the triple gauge pod in the center I am in the US and have a 10-15k USD budget any help, insight or suggestions is appreciated