320hp until you start pushing the limits.
wasy 171hp with pipes and PC
185hp- with Dry NOS and pipes and PC and Air Box mod
hp
200hp with large hit of NOS
400hp with Turbo and NOS
Lots of good kits out there depends on what you want and what you want to spend.
Average $3500-$4,000 plus install $1,000 with Dyno tune.