Posted for "sqpilot@earthlink" <sqpilot@earthlink.net>:
 Hi, Ed....I am going to go normally aspirated.  Keep it simple approach.
I'm hoping to cruise closer to 7 to 8 gallons per hour at cruise at
altitude, whatever speed that may give me. My aircraft is pretty clean (low
drag), so I should be able to get a decent cruise at those fuel burns?  I
might just go with a radiator that is 18" x 6" x 4"deep, and settle for a
lower rate of climb.  My SQ2000 with a Lycoming is supposed to climb at 2500
fpm.  (I flew in the factory SQ2000, and we climbed between 2200 and 2400
fpm up to 8000 feet).  So, If I have to settle for a lower rate of climb, it
should still outclimb any of the Cessnas I have owned. Thanks again for your
input, Ed.     Paul Conner>