I had a look inside with a bore-scope tonight and its pretty carboned up everywhere I could see. The top of the piston and the combustion chambers are all caked. The good news is I could see nice visible cross hatch.

As per previous questions the car has 3.23 gears and a 2500rpm stall.

I'm thinking that the common opinion of giving it a steam clean or sea foam sounds like the best step forward. I've always been researching fuel injection and what set-up to go with but wanted to make sure I didn't have any larger issues before I fork out the cash.