I have a 98 CR250 with the stock OEM PJ Powerjet solenoid carb and was thinking of switching over to a PWK Airstriker if possible for more power. My question is, is this even possible with my bike and will their be any real beneficial gains? I am satisfied with the power right now but am the person who likes to spend alot for even little gains here and there. I have seen Airstrikers applied to older trx250rs. Please share your opinion. I have Vforce 3's already installed.

I think a vortex ignition gives you more HP than an already working carb.
http://www.vortexcdi.com/product_generic.php?cid=1

Nitrous and a blower.
You can probably switch carbs and jet accordingly. As long as you can mount the carb without an airleak, hook up cable properly and attach air box, it should work. But a carb change by itself may or may not give you any more horsepower.

Not to mention if the carb isn't tuned for the application you can lose power or worse, cause engine damage.