If the radio is in the front the a/c is incapable of being flown from the back seat unless on a non radio basis, and why the heck would anyone do that? It certainly makes the claim of carrying other team members from time to time look a bit cheesy - were they navigating and (licenced) using the radio?
Additionally if the aircraft was set up with the radio head in the front than it is clear that even from the planning stages when the aircraft was being rebuilt that it was never intended to be flown solo from the back seat from day one. Likewise, if the sole "pilot" had no GPS but the front "pax" did then it is clear that the burden of navigation was on the front seat, not the rear. Assuming that the radio head and GPS really were in the front this proves that TCT was never expected to fly alone from the conception of the whole thing, unless she planned the highly unorthodox solution of flying it from the front.
Is there any evidence of TCT ever flying it from the front?
Who did the RT - are there any records of whose voice was transmitted - or did the Caravan in practice handle nav and formation RT?
Fishier and fishier!