I have a 2011 w/ SVTPP and recently got an unbelievable deal on a 13/14 TVS take off. After installation it put down 606 whp/ 611 tq. Just for conversations sake how does it stack up to a 13/14 stock GT500. it seems I have a 15-20 whp advantage and 3.73 gearing, and the 13/14 has improved suspension and the 3.31 gears helps with wheel spin and top speed in 5th gear. How to they compare head on? If I had the chance I would have definitely picked up the 5.8 but it would not have made sense financially. Both are great for what they are.