Small update, a very negative one at that.
I had the old girl checked over by my local holden specialist/wrecker and the list of things that came back that need doing was quite extensive and is as follows:
one new wheel bearing $150
leaking power steering pump needs replacing $150 for 2nd hand or $250 for recon
exhaust manifold gaskets leaking $?
rocker cover gaskets leaking $?
wheel alignment and balance needed $80
service needed $190
retune needed $80
engine and transmission need steam cleaning to determine engine leaks $55 for steam cleaning $? for repairs
im comfortable to replace the power steering pump myself along with the rocker cover gaskets. i reckon i can do the power steering pump for $50 to $100 myself and the rocker cover gaskets for $20 to $30. i might have a go at the exhaust manifold gaskets as well which should cost about $20. im going to hand clean the underside of the engine and transmission with degreaser, i know it will take a few hours of hard work but id rather that than spend an unnecessary $55. the engine doesnt seem to use any oil so im not convinced that its leaking, i think it might just be dried on oil from a previous leak or something. the gearbox feels like it is leaking though as its very clunky and has started to jump out of 1st and 3rd gears.
its now pretty likely that ill fix the bulk of the mechanical work, bar any engine/transmission leaks and sell the car on and upgrade to either a VT II SS, 300ZX TT or WRX.
will be a shame to see the old girl go