Essential details has released 1:72 scale P&W R-2800 engine sets for the F6F Hellcat, F4U-1A/D and P-47D/M Thunderbolt as well as 0.5 caliber gun barrels in 1:48 scale
This is partial text from the full article (usually with photos) at https://aeroscale.net/news/thunderbolt-corsair-hellcat-engines-plus-gun-barrels-released