This was on the back of a guys truck today. I asked him how he liked the old Pioneer saws. He said he had torn down an old shed and the guy gave it to him. He asked me if I wanted it because he was just going to trash it. Free Pioneer P5something !!! Anyhow, I was hoping you guys could tell by pictures if I have a P50, P51, or P52. Are parts going to interchange regardless? I will gladly dig deeper and try to find a serial# if that would help. Thanks in advance. Sorry, had to throw in a picture of my best buddy too.