I think some of those who didn't serve, would find it amusing to see some of the unofficial mods that were done due to operational necessity.
My father's half-track (an M9) in Normandy was an OP vehicle for a medium artillery battery, and was fitted with a German radio, MG15 (fell off a German aircraft) and a rather large pair of binoculars that fell off the back of a German coastgun site!
Whilst with 3 Div Signals, we modified some 109s with Dexion racking to take an SR C50/R236 station, so that a single detachment (2 109s, an equipment trailer and an antenna trailer) could be used as a relay or "double-anchor", instead of having to deploy 2 detachments. At 1 Div Signals, the inside of some Bedford RL and Commer Q4 boxdodies bore no resemblence to the CES.
OK, OK, some people displaying go overboard with their ex-MoD vehicles- but it's a cert that the majority wern't even in the forces. Those of us in the know, just chuckle and move on.