This Stihl 064 that I now own really surprised me. Very few loggers ever bought them in this neck of the woods. Back then, they opted for the 084, 088, or MS 880, and many were dissatisfied with the big, heavy, overweight monsters. They replaced them with the 066 or MS 660, somehow forgetting or bypassing the 064.
Last spring I let a logger start my 064 who now uses MS 661's for his business. After he started it, he said, "Edwin, do not ever sell this Stihl 064. This saw is a brute."
I'd love to run this 064 one-on-one with the Ceraftsman 5.2 shown here. But, OP would likely have to help me start it. No decomp available.