I agree. Especially if yours is tuned and is running right, it won't even be a contest. NEW 2.5RS's that make 177HP at the crank only make about 117 AWHP. So a 2000 is going to make around that number at best, especially since they are rated at less power I think.
He might take you from the jump because of his ability to launch, but that lead won't last long. I'd give him no more than your 1st two gears before you reel him in.