Well the GT500 is a heavy POS anyways.
..... you can always put as much HP as you want in a car but weight is something you cant get rid of (to a certain degree.... its there and will be your enemy anytime you drive.
So what your saying is Put 2,000HP in a Bus and it will be Fast.... WRONG.
My buddies dad has a 07' GT500 Modded to 800FPTQ..... With a roll cage, no driver, no back seat it weighted 4,100 LBS!!!!. Thats the weight of a Land Rover.... Really think that can handle? Um No. My little 3122LBS SN95 spanked the crap out of the GT500 on the road course..... Power ment nothing. Yes he would whoop me on the straight but once the corner came i could late brake, turn in, and power out because of my Light Weight.
Power Means Nothing Unless you can handle... Period