Hello Roger, good to hear from you. I can't find that section on Drags site where I read about the census numbers being awarded to engine numbers. It was pointed out to me by another forum member (Vincent?)
Never the less it's worth debate. I was sent this itinerary of vehicles from some establishment or other which includes 5 W/NGs and 2 Jeeps. As you can see, it includes census/frame/engine number (and the drivers) I've cross referenced all of the W/NGs census numbers and they tally exactly with frame numbers as if worked out in sequence via O&M. Regards Ron