Is there a brochure for the P-spec that would usually tell you who its aimed at. I thought the only starlet with a lsd stock was the advance, The rest were just optional? As for the 4efte (4afe, 7afe 5sfe etc) being an eco engine thats a Wikipedia reference F is a narrow angle head used in toyotas eco engines. G being their performance head (4age, 2zzge, 2jzgte etc) So it is generally true but strapping a turbo to a car in the 80s/90s was never going to be an eco engine the tech wasnt there like it is now. Also toyotas head design is a bit backwards anyway most performance heads these days use a very narrow angle head K20, most race bikes, f1 engines.