Thats the beauty of this series of saws. Just about all the parts are interchangeable. And over this many years, you never know what might have been replaced from a donor saw.:msp_thumbup: Most things can be had from site sponsors, and or Ebay. There is all ways a plethora of parts and what not on there for these saws. Sometimes, even decals. If your in need of a bar for this saw, they use the Oregon D176 style mount. A 20" bar, 70 dr link chisel or semi-chisel chain, on the 3700, makes a great powerful midsize saw.
Here is a pic of the one I have,
Gregg,