Tclaridge,

Many thanks for all that great advice.

I think I will stick with the E60 as I have a Flightpower Evo lite 6 cell that is about 13oz. I have found will just fit horizontally across the back of the firewall which should help the CG. I will mount the speaker, amp, 2x900maH Lipo power batteries and ESC in the cowl as you suggest and use the Eflite 60amp ESC BEC to power the receiver and soundcircuit with a Y lead. The sound circuit takes about 0.1 amps on full (1.5w at 15volts) so should be less than another servo. The carbon rod replacement sounds a great idea to save on rear weight, also moving the servos forwards. I will certainly try the rods and see how I get on before I move the servos. Once again thanks for the input. Be interesting to see where I get to on weight initially and see if I have to go further ie: battery through the firewall