And another one.  I knew some FAA Hellcats were fitted with Firefly-style blast plates and 8 rails for British RPs rockets but reasonably clear photos of the installation are not that common.    http://www.worldwarphotos.info/gallery/usa/aircrafts-2-3/f6f-hellcat/f6f-hellcat-mk-ii-landing-on-hms-ameer/