Yeah it should be ok. You'd see more power with a custom tune though. If your not wanting to get a custom tune i'd atlease dyno it to make sure the a/f looks safe. Better to run alittle rich than too lean. So you should be ok.
my guess is that you'll run too rich.. i used the pulley tune that came with the predator and it was WAY too rich. you're best off with a custom tune.. trust us.