I am planning on getting a B303 cam from summit and the guy I talked to said if I go with that cam I would have to change my firing order to 1-3-7-2-6-5-4-8. Is this right? What is the firing order on our cars now? I can't remember off the top of my head. He also said I would have to use adjustable rockers w/ guide plates. Anyone use a B cam and did you have to change this stuff? Thanks alot.