Of all the Gooney birds I have flown none could compare with the Southern Cross in power and climb. It was the only light skinned 3 that was approved for 1820-76D's equipped with 2- speed super chargers for a combined 2,900 horse power. In high blower it could effortlessly climb to 27,200 feet. My logbook shows 262 loads at 100% reliability. I operated the airplane very conservatively, flying the engines at 55 to 65% for a 1,000 foot per minute climb. At a 17,000 foot exit, the power reductions started at about 14,000 slowing the rate of climb to about 600 fpm and 85 knots. The cut airspeed was about 70 knots and a bunch of left rudder. There is quite a bit of finesse to really get a 3 to perform and remain reliable, you fly the engines. The airframe is just along for the ride. I wish the latest owner good luck with her. Bob Metz