You are sort of right about the size Alan...all depends on orientation, length of pushrods, air-line exit directions, etc.........I have an EV-5, as well as using UP-2, UP-3, and UP-6 dating back to 1999......but I still have a sweet spot for Tom Cook's and UP's simple, reliable stuff as it has provided absolutely foolproof, never-fail service over the years. Everything else I have used at various times including JetCat sequencer, JetCat Electronic valves for retracts and brakes, EV-5, Original PowerBox, Emcotec Powerbox have all failed at one time or another and one of my recurrent going-postal scenarios is replacing gear doors and repainting fuses, or more major repairs when that happens. Before going 2.4, I was on the Ham Bands, and whenever I got the 50 Mhz TX antenna too close to a JetCat sequencer, it would wipe out the volatile memory and usually fold up the gear.....[:@]

My FB was built and painted by Kirk Jensen and came pre-packaged with almost all of stuffing stuff for me to install.......otherwise, I probably would have gone the KISS route with a UP-2/UP-6/Tamjet FS, which is what I have on my Bandit.