Just thinking along another line right now so maybe this would work.
using the calculator for static compression with boost at
http://www.rbracing-rsr.com/compression.htm
It looks like I can run about 8:1 with ~2.2-2.5 pounds of boost. Lucky me I have a pulley around the 2lb's mark. Ordered a set of 3.13's for the rear and will more then likely replace the 800 with a 650 tamer carb. Does that float on a mechanical levbel. i can still use 87 at that ratio, I can use a smaller carb, and when I go the track just bolt up the 800 and the bigger pully and go run.