The GMC blower is about the least efficient, of the rootes types. This is made worse at 7,000 ft. corrected altitude. The only thing helping this set up, is some cooling effect from the methanol. No sense boosting the motor, more than it needs to do the job. If (2) new drivers can go 200, with no drama, we'll have job accomplished. Onward, flyingwedge.:cya: