I am about to pull the trigger on a purchase of a used 6.1 Vortech supercharger to install on my 09 5.7. What major differeences will I run ito? Are the injectors bigger on the 6.1 kit? It comes with everything, including boost a pump, do I need the BAP? I am getting a great deal on it, just want to make sure I don't blow it up when I install it.