Does anyone know what spark plugs are the best? I have heard NGK plugs are best and what about wires? Where can I find a decent set, not for 50 bucks... anything about them is nice to know. Instructions, any power gains, anything noticeable? Just let me know, Heard of some HP gain like, 1 or 2 if that through spark plugs and wires, True or false? Thanks guys. Looking to get new ones and need to know where to get them and how to install them myself is it hard?