We are putting nitrous on one of our megacabs. It currently has a Smarty, TST, MP-8, 120hp Scheid injectors, FASS 150, Silver Bullet 66, and we will be studding the head and adding a stage three Floor It cp3 also. Looking at the ZEX and Nitrous Express kits. Which brand do you guys recommend and which kit would be best for this truck? Two stage I assume would be the way to go?