Your spot on Glen , you do have to get it right for when you parade your vehicle, those in the know will be all over it. I know in the 80's 26 Tpt Sqn ,18 Tpt Sqn , and 16 Tpt Sqn ( ARES) made up 9 Tpt Regiment . I don't think 9 Regiment is on the ORBAT today.
The tac plate then was 9 over 510 white numerals royal blue plate with red sash.in regards to 26 Tpt Sqn the unit mascot was a camel which was stencilled onto the vehicles in 86 Tpt Tp, 87 Tpt Tp ( tipper) had the camel with a tipper hump and 158 Tpt Tp had the stalk with a tank in the sling.
Cheers,
Mick