Jason I sent you an email.
Yes I am running a 501, but have only had a couple of practice runs so far.
Still running the stock setup except for the front one-way.
As for tyres most guys up here run:
Front: taper Pins, Holeshots, Blockheads
Rear: Taper Pins, Holeshots, x-2000's
Buying tyres locally is a pain - too little stock and too expensive. I'm trying to organise some o/s but getting 4wd fronts is quite difficult.
As I mentioned in my email, the Qld titles are in June at Ipswich, I'm planning on running the 501, just need a buggy for 2wd now.
Apparently, due to water restrictions, their track is now a mixture of hard packed clay and astro turf - so I'm not sure what tyres will work there - sounds good though