What kind of sled are you running with?
I know if I had an M8 to play with and fist full of $ I'd seriously look at the Vohk / Boondocker Pump Gas Turbo
http://www.boondockers.com
For Doo's I don't know if I'd turbo my 800R ever. I know there are few to choose from (turboboyz kit
http://www.turboboyz.com, CPI racing, ). For the most part I would only put the Sled Head Racing BB 860 in her. >
Quite a bit cheaper than a turbo kit and a great performing engine mod out west.
I don't know what the hot set up for the Poo's are.