Have also started to tinker witht he lump, have bought a new crank pulley off of 'armracing' many thanks for that (should arrive tomorrow)
I took the manifold off with turbo attached, placed my nice new shiney one on the block to see what it looked like and its spanking!
Treated the whole thing with metal cleaner, slightly rubbed it down with wet and dry, then painted it (using a tiny tiny paint brush!), still have a bit to finish but you can see from the before and after pics that it looks sooo much better! Should look well nice once all the paints done and chromed manifold goes on!
Also looking at the dust from the clutch, its due replacment, so will be keeping me eye out for something decent, might even do the flywheel at the same time, not sure if it makes much difference to the power though. Might be worth it as I doubt ill have a chance to get at it with the gear box off.