This site is great with a lot of info , My Bus is a Bitsa (Bitsa this n bitsa that)
1980 International Chassis
1984 Austral Body ( Made in Brisbane australia)
Allison MT643 Auto
Turbo 8.2 GM Fuel pincher (Rear mount)
Its registered as an INTERBUS .
Was a school & charter but in central new south wales from new & has zero rust from being garaged every night and a dry area . Has 750,000 kilometers on the clock & runs well , I envy you guys with cheap parts over there , A used 3208 etc here is $5000+..