You just THOUGHT your cars were expensive

Rolls Royce licensed Packard to build them back in the war because Packard was the only manufacturer that Rolls would have to build "their" engines. Packard was top of the heap back then in manufacturing. Chrysler built an inverted V Motor (XIV-2220) that powered a modded XP47H to over 505mph level flight, and this was back in 45! DOA Curtiss P-60 had same prop design.

Actually there's been talk that Packard built Rolls engines better than Rolls did. I don't know whether Packard was the "top of the heap" or not. When the B-29 engine production got underway, Chrysler made a hell of a lot of 'em. And Ford made a LOT of aircraft, as well as GM

-----------------and the thing you left out is that engine was the very first beginnings of the Chrysler hemi