Thanks for all the input guys...
Timing belt has already been done, with a greddy one (pretty noisy though).
GTSS Turbo kit finally arrived today albeit with a $377 GST bill from customs which isn't too bad really. Didn't know so much extra stuff comes with the turbo's, exh manifold gaskets, all washers, studs etc..thought that was a good score
Engine mounts got replaced today, one was cracked. All belts and spark plugs done aswell.
Another interesting thing, the mechanic said the engine has had some work before in australia some time as all the welsh plugs have an A for 'Austral' brand on them. Also non standard colour plugs, the harmonic balancer had been replaced here in aus aswell and it was pretty easy to tell that the block had been sandblasted at some stage..
Unfortunately the budget isn't going to stretch to getting the engine taken apart. Although I would be dong the baffles cams pistons etc etc. I had to draw the line somewhere and i'll be pretty happy when it's all back together. Oh and it did compression test ok last time it was done.