hks cams are prerry popular on this board, I believe
you shoudl do a search on people's feedback on them
remember this now though: you have a turbo, you can raise the amount of air pushed into the engine to make power now
I believe, even without cams, with a slightly better turbo, injectors, a/f mangement, tuning, can get you close to 300whp
we have the same goal: maybe you can use my list to use as a refrence:
http://www.heatsinkninja.com/240sx.html
gt2871r and s15 turbo are popular on this board also. I anticipate to be around 300whps with a turbo upgrade/tuning