how does the Centaurus compare with the R3350?
From Wikipedia (so take it as you will):
R-3350-C18-BA:Length: 76.26 in (1,930 mm)
Diameter: 55.78 in (1,420 mm)
Dry weight: 2,670 lb (1,212 kg)
Power output: 2,200 hp at 2,800 rpm (takeoff power)
Centaurus VII:Diameter: 55.3 in (1,405 mm)
Dry weight: 2,695 lb (1,223 kg)
Power output: 2,520 hp (1,880 kW) at 2,700 rpm
Seems potentially like a good match. Maybe do a Licence production version for either the UK or the Commonwealth? Maybe a good selection for a RAAF ASW B-29 instead of the Lincoln Mk.31 - ditch the Turbo-superchargers if operating most of the time at low level. Put a Mad boom out the back.