new to the rxp ski, just bought a bone stock 07 today,is a partial stage 2 kit available eliminating the power cooler, sponsons and opas block off plates,if so how much $$ and what can i expect for performance upgrade ? thanks!

Congrats! What you're asking about would be a Stage I Kit, basically. We offer/recommend additional performance upgrades for each kit. They're listed at the bottom of each kit's web page. Click here and scroll to the bottom of the page.

We don't offer "partial" kits. You're free to do your own set up; which is very common. We can provide insight as to what to expect. Feel free to contact our tech rep directly at 954.247.0705 or at tech_support@rivamotorsports.com