i have a 99 camaro and im thinkin about gettin a heads and cam set up for it its slp/afr, identical intake and exhaust... life is .590 and duration is 236, ill probably just go with stock rocker arm ratio cuz 590 thousands if plenty of lift for me... but i was just wondering if i would have any vaccum problems at idle or if would be fine... and intake valve is 2.08", lol i would still like to have brakes while driving