I was just browsing online and found people talking about changing out their cam and that changed their firing order?? Is this true? One guy said "Try: 15426378. That's the non-HO order. Only HOs and 351Ws used 13726548. Sounds like you might not have an HO firing order cam." I have a 94 GT with a b-cam and stock heads. Is my firing order different than it was stock?