Ok so i have a 90 Si with a stock ls in it has header and intake. But i want to go ls/vtec or turbo it. Ive heard from a few people that the ls/vtec usually dont last that long, but then again they might not of been done properly. I heard that a stock ls could hold 10psi, is that true? Now my question is what might be better. Me going ls/vtec and then possibly turbo later down the road or just do turbo? My goal is to make mid 11s to low 12s, is that reasonable with an ls?