I didn't mean not get one all together just one to fit around a 185, one that would cut down on duration and lift, but having said that. I would call Ed Curtis at Flowtech induction. He does a bunch of cams for the 5 litre crowd as well as NMRA pure street. We have installed several and its well worth the extra money. By the way he helped design the AFR head, I would also recommend getting the heads from him as well, as he does a few tricks to clean up the airflow even more..
www.flowtechinduction.com