I have now ordered a bunch of parts from Pelican Parts, most importantly a new gasket and bush for the oil filter housing which will hopefully fix the oil leak.
I have also organised an even cheaper windscreen ($198) which is being done in a couple of days.
I haven't been able to find any sports seats but I did find a black leather standard interior that looks in very good condition so I may pick that up this weekend for $300,
I pulled apart the sunroof which looks like it needs at least a new cable.
Still need to sort out the all important transmission though.