http://brodak.com/electric/conversion-kits/universal-a-electric-conversion.htmlStock #BH-1943 Universal "A"
Stock #BH-1944 Universal "B"
These are generic mounting systems adaptable to many existing designs or sqcratch build designs. Universal "A" is designed to be used in a model that has a 2” wide inside dimension to the full fuselage. This corresponds to just about every 35-40 sized model from Brodak or from other sources. The Electric Conversion system revises the fuselage construction to a firewall mount with a battery tray and a top access hatch. It works with any of the Brodak Arrowind 28xx motors, or similar sized motors from other sources. There are a couple pix shown below of the system going into a Brodak 59 Ares fuselage.
For larger motors try the BH-1944 Universal "B" Conversion Kit that is designed for 2.25” fuselages and large frame motors