Wow thanks so much for such an informative post.. With the fuel filter.. I'm running a line filter before the pump.. is there another filter in the pump itself or is there a filter in the carb? pardon my ignorance?

with regards to the early/late model pump the hardest thing i've found is tracking down the difference here in sydney.. I know I have a late model engine.. the replacement pump I bought said suits models 70-73 (on ebay) but doesn't look like the old model pump in the photo... I've been now to auto 1, repco and supercheap.. all have told me the same thing.. they stock a goss fuel pump which is suitable from 71-80 or a fuelmeiser which is suitable for the same year range.. so HOW can i find one suitable for the later model engine if all 3 places are telling me that the pump they stock spans the range???

Thank you again dodgeman.. really appreciate the post