The stock R3 will do 0-60mph in 3.1 seconds, according to some of the early road test reports (some even said lower than that). That is with about 120-130 hp at the rear wheel - the 140 or 150 hp claimed by Triumph is at the fly wheel. Now add some pipes, air filters, and some of Nev's stuff and get around 180 or 190 hp at the rear wheel and figure out if you will be able to hang on.
The beauty of Nev's stuff is that it is in the normal range of revs that the bike was designed to run on. i.e. there is a lot more torque where you use it. Carpenter stuff seems to be aimed at power in high revs - up to 9,000rpm. There are very few roads in the USA where you could legally hit 9,000 rpm in 1st gear, and none that I know of where you could use it in 2nd. Those sort of revs may be good on a race track, but if I were racing then I would probably pick another bike to do it on.