Well on the Ju-86K-2, which was the sole one of this designation, they had the original Pratt Whitney Hornet S1E-G 9-cylinder radial of 875HP. Theere were 3 K-1s and the K-2 designation came about when one example was fitted with skis for Sweden. As pbfoot noted the K-9 was the model that went to Hungary.
I don't have any exact armament data on this model nor top speeds. The Ju-86G -1 which had 865HP engines gave a top end of 236MPH @ 13,120 feet while the E-1 with 810HP engines made 224MPH at that same altitude