The Spitfire Mk IX was originally developed as a stopgap measure in response to the appearance of the Focke-Wulf FW 190A. In July 1942 an early Mk IX was flown against a captured Fw 190A, and the two aircraft were discovered to have very similar capabilities. The RAF had its answer to the Fw 190 problem.  You get two variants with working VC ; ZD-B is still flying today at many airshows and JE-J was flown by Johny Johnson the most successful British WW2 ace. Tested in FS2004/FSX/FSXacceleration, windows 7/8. GMAX mdl by A.F.Scrub.