Hi, based on the following article:

http://www.aeroelectric.com/articles...n_EFIS_pt2.pdf

AFS
"We have extensive test equipment and three aircraft that we use for flight testing. Most testing is done in our RV-4 and our RV-10, we routinely fly our RV-10 in actual IFR conditions. We have [and test our system with] a SL30, 480, 430W, 195, 295, 396, 496, GTX330, GTX327, Zaon, Avidyne TAS600, Dynon D10A, D100, GRT Horizon, and most if not all of the latest Bendix King radios."

... I'm wondering if the KX-165 radio is a supported ILS source for the HSI on the 3500s and 4500s?

Thanks.