Boosting performance on 300 and 400

[wolrahnaes]

I am working on my 400EX and my neighbor's 300EX. I would like to know what the best values you have found for performance upgrades are. They are currently both completely stock (aside from beefy skidplates on the 300), and we are planning to install K&N air filters and Dial-A-Jets

I have looked in to a 440 kit for my 400 (is there a bore or stroke kit for the 300?), nitrous, and turbos. If anyone has seen a nitrous or turbo kit for either the 300 or 400, or if you've used any of these 3, plz respond.

I have also posted a poll on which is the best bang for the buck

[250x#93]

There are a lot of bore kits for a 300 Powroll makes bore kits so does LRD i think,thumper racing, TC

[northeast400]

Nitrous will give you bang for the buck, you send bucks and motor goes bang