Your M3 should definitely pull a stock 2013 GT-R if you are racing from about 70mph+. Youre making at least 80 more HP and a lighter car. Dead stop I've hooked a 0-60 in the GT-R at 2.8 and managed a 60 foot time of 1.4 Mine is putting down the same power as your M3 so would be curious to see how it does from a roll. I would said pretty much dead even. As far as road courses go, Ive got a track tune that is more conservative.
Current Stable: Some Audi with a V10, Couple of BMW's, one F Car, and one P car. One lonely GT-R with all the Euros.