Rob Richardson has released a Spitfire PR.XIX, as freeware, to be found on sim-outhouse: SOH Forum
here’s a few pics of a Swedish paint I did for it:
S31 (0003) by JanKees Blom, on Flickr
S31 (0008) by JanKees Blom, on Flickr
S31 (0005) by JanKees Blom, on Flickr
not study-level, but a nice model nonetheless