I'm planning on buying some Skunk2 Stage 2 camshafts soon, and along with that i'll have to get the whole vavletrain. My question is for those with build heads like this, is it alright to leave the bottom end stock? i have no plans on building the bottom on my H22 and i was wondering if its safe, after the head work, i just plan to use a 50 or 75 shot of N2O. Thats all, so will it be safe for the bottom end since i'm sorta raisin the compresssion? also do people who build the top like this, do they burn oil? get any problems?