Here's a 62 C model I owned for 17 years and put a lot of hours on, many times with big loads. 142 knots cruise 8.3 gph, would do 154 knots at max power. Did 3 Cayman Caravan trips with it, one was with 4 adults and full fuel IFR at 10K. Other than being a pain to work on it was a wonderful...