My father (deceased) knew Ed Marquardt and finished his own Charger (N584) around 1974. My father and the plane lived at Peachtree Dekalb Airport in Atlanta. He flew until just a couple of years before he died in 2000. He also built and sold Charger airframes for other people. Don't know how many, but it was several. If you know Ed M., he would definitely remember my father (John Matthews) and Charger N584. The plane was sold to a guy in Georgia.
We started to build our own back in the mid 80s with my Dad's help, but we couldn't really afford it at the time. We have a complete set of beautiful wing ribs and lots of fittings (my father called them "jewelry") that Dad built for us if anyone is interested. I don't really want to part with the set of plans...besides, the plans are very "used".
S. Travis