400EX or XR250

Hey if I put an IMS 440 kit 10.5:1 compression, White Bros. cam (Fast Offroad, Track), White Bros. E-Series Exhaust, Motion Pro Twist Throtle, K&N Power Kit, FMF AOF Power Ignition System, and FMF Hi-Flo Headpipe on my 400EX would I beat a XR250 with a pipe and a power kit? I'm 6 foot 4 and weigh 300 and the pilot of the XR250 is roughly 165 and 5 foot 11. I'd like to know all kinda races like drags and corse we're both the same experience level. Thanx:devil

[MIKE400EX]

Horsepower to weight ratio is about the same for both. The XR250 is probably geared to go a little faster. My guess is you'll pull him slightly up to fourth then he'll start to walk away as the drag of that 400EX starts to come into play. An FCR carb would help you alot!