EAA flyin census info, actively flying homebuilt #'s??

I am thinking of getting into a new homebuilt project but I wonder where to get
accurate numbers of how many of a particular design are flying or where I might
see some examples of the kit I am thinking of building. Does the EAA keep a
record of the kits flown into the big fly-ins Oshkosh or Sun-n-Fun? The FAA? Do
they keep track of the kit manufacturer or just lump everything into amatuere
built.
Specifically, I wonder how many Zenith CH 701's (STOL) are flying and what has
their accident history been?

Anthony
Memphis TN