Neat article on the Sea Fury WG655 which has one of the Sanders R-2800 conversions. In the article they mention the Vne is 382 knots. This seems low to me. Is this true? Seems a few of the Sea Fury's at Reno have gone faster than that. https://vintageaviationecho.com/sea-fury-t20-wg655/
According to the Mustang manual the Vne is 505 mph which converts to 438 knots.