Dragon's T-34/85 NVA comes with markings for an Angolan tank. Since the kit is designed to represent a Vietnam era T-34/85, it is probably your best bet for the most modern variant (DML also does Korean War, 1944 and 1945 T-34/85 variants).
Skif sells (sold?) a KMT-6 mine plow for the T-55/62/64. It was fairly cheap, around $5, and was a single sprue in a bag with header card. I do not know if it is still in production or not. It was item #N-502. I wished I had grabbed more than one.