Cub Drifter 1980 hubs wheel... bigger wheels?

not sure how these things are built, can you maybe do a spring over conversion on it at the time of fitting the new hubs to give abit more height and clearance to the camper?

We had an early Cub Campomatic set up with the same wheels and tyres, no brakes though.
The wheels on ours were 10" mini wheels on four studs, wore like buggery on outback trips and were next to impossible to get tyres for away from the big smoke.
The only larger wheels that will fit the same stud pattern are 13" mini moke wheels which are as rare as rocking horse poo.
The bearings are standard early holden so the easiest way to larger rims is to fit holden hubs and then you can run a wide variety of tyre sizes.
We initially went to 13" rims and the tyres are just as hard to source as the 10" ones in outback areas so then fitted 14" holden rims which means then you can run 14" light truck (LT) steel radials which are tougher than many 4wd tyres.
We also did a spring over to get the required mudguard clearance so just carried a bag of wooden blocks to level the camper.
In your case with the brakes the easiest way would be to change the whole axle and brake setup to enable the fitting of bigger wheels.
Forget about fitting 15 or 16 " size rims as huge changes are required to the camper to get them to fit and the camper will not be strong enough to handle the unsprung weight of the big wheels and tyres.
14" with the LT tyres will prove to pretty much ideal on a light trailer.

Thanx for the replies thus far.

Ozhumvee now that your running the 14s with the spring over is there much clearance inside the guards, do they ever scrub? Are they easy to get on and off?
Also do you no the tyre size.
I have been thinking about putting mid 90's 5 stud hilux rims on it 185 14 LT.
They fit onto ford stud pattern. There as heaps and heaps of them about as they are the same for hiluxs and hiace. Generally speaking if you buy a hilux rim from a wreckers it will have a light truck tyre on it and can usually fish around for a good tyre that was a spare. Hopefully there will be heaps of them out in the outback.

But looking at it, it just doesn't look it will fit. the wheel atm dont look like they are in the center of the wheel arches.

Any more help or pictures of yours would be a great help.

Cheers mate.