Ex-Army Australian Wagons were popular and good looking amongst enthusiasts - for a start you could fit the kids in the back. I also know of one example of a civvy wagon that was reconditioned privately about 2005 or so and done to look exactly like a late Series 2A Army wagon.
Tracking info on the ARN and chassis and having a matching body gets murky because records are obviously 50 years old and some are missing or mixed up - we do not know of a book showing how many chassis/body swaps were done in the Army reconditioning project in the late 60's / early '70s.
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https://www.remlr.com/ARN/ARNseries2_part177.phpIn the Wagon list, ARNs 177-xxx, we see some examples of Aust Army Base Workshop re-chassis jobs:
117-027 Wagon body onto a 253 Workshop chassis 114-142
177-028 Wagon body onto a 253 Fire tender chassis 116-938 without any BBB write-up
114-235 Workshop body onto a Wagon 262 chassis 177-029
114-225 Workshop body onto a Wagon 262 chassis 177-031
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http://www.remlr.com/ARN/ARNs_NZ.phpThat NZ list has a Workshop Truck ARN 114263 chassis 25320509C purchased by NZ Army. So it can serve as a proof that Aussie Army Workshops did get signed over to NZ Army. Could be very relevant info as well.
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ARN 177-022 .... is 26210883G
James you say "114-266 which is based on it's current engine 25278795H and chassis 25320507C" and the body has a ID plate 26210883G on the firewall in front of the gearstick.
Does it have any 2 Base Workshops record plate?