I'm looking to buy a VMP supercharger next month (once the Black Friday deals come out). I am undecided between the Gen 2R and the Gen 3. The car has a stock bottom end, transmission, rear end, etc. The car has suspension work and bolt-ons. I'm looking for whichever will give the more reliable setup. I've been told the bottom end is only good for 600-650rwhp and I have no plans to build the engine. Which option should I go with? I don't mind spending the extra money on the Gen 3 if it will allow for more hp at lower boost, safely. Are there any other supporting mods that are strongly recommended for the 600-650rwhp range? OPG's, driveshaft, clutch? The car is a 2014 GT with 26k miles. Finally, I've been told VMP cannot tune/turn off the rear o2 sensors for an o/r mid pipe so I'm considering putting the cats back on with a Borla catback to avoid a check engine light. How much will this actually affect performance? Any advice is appreciated.