Sources for Dynaco Stereo 70.

Hi folks. I need a project and thought that I might enjoy modding and upgrading a Stereo 70. When I look here on Audiogon, all of the 70s that have been for sale are alread done and completely tricked out. Likewise the auction sites. I have been to the thrift stores as well. So, can anyone suggest where I should look for one? Thanking you in advance for the guidance.