One of the first electric airplanes I ever had the pleasure to fly was Crist Rigotti's Barnstormer. The Barnstormer loses none of its charm to electric power.
Brodak is now offering an Electric Conversion kit for their Barnstormer. The kit (#BH-1947 for $14.99) includes the front end mods for the motor and battery, plus it includes 4 new center ribs and a lite ply leading edge brace that lets you cut a 1" deep notch in the leading edge for battery clearance.
The battery tray sets the firewall to a 3 degree offset, with the motor offset toward the inboard fuselage side to help keep the prop on center.
Hope this makes it easier for folks to discover Electrics & OTS!
http://brodak.com/barnstormer-electric-conversion.html(edited to correct the price)