I picked up a bomber for $23.50 the other day....Like I needed another mod....I have a tank crosser wood box clone that was a mech,and I changed it to use a mosfet just because I could.....I also have an ABS grip type mod I did the same to....I used a button from rat shack and got ten IRLB3034PB M.O.S.F.E.T.s from Mouser electrics ....I had the same idea for the C/B but like You said,no room....Z