All guidance methods, are based on T/T guidance. Gorka/N/Fi just add some elevation to the missile flightpath. (similarly as K adds elevation to UPR)
All methods are automatically selected except N.
Hpasp Free SAM Simulator, "Realistic to the Switch" (U-2 over Sverdlovsk, B-52's over Hanoi, F-4 Phantoms over the Sinai, F-16's and the F-117A Stealth bomber over the Balkans.) http://sites.google.com/site/samsimulator1972/home