Motocross training

I love your stuff and plan on to buy your book and video. With thay said, I have been training for about 10 years, and I also do motocross. this year I plan on racing too. What do you suggest as specific training for that sport. For cardio I can manage, But for weights??? How much reps???sets??? more or less…I Want to kick ass you know !!!

Thanks for your time and answer