Here are a couple of 1973 stihl 015 saws that I custom built and used for many years. Recently a guy made me an offer on both saw that I couldn't refuse so I had to let them go. Now I'm building an 015av and have another white 015 top handle saw that I'll be building next. These are nice little saws and rev to 12,500 RPM so they are screamers. I always remove the points ignition and upgrade these saws to the updated kawasaki electronic ignition module which starts faster and is more responsive. I also port the cylinder and muffler, install Caber Italian rings, advance the timing, convert them to 3/8 pitch, I make custom bumper spikes for them, and I install a velocity stack intake and k & n air filter. My neighbor has an ms200t and he swears that the "Lil' Monster" 015 that I built is as if not more powerful than his 200t which is pretty impressive for a 48 year old saw with smaller engine than the 200t.