I have a 99 AGU with cable throttle with cruise control from the factory 
Me too
,seems to use alot more fuel when used though so its an extra i dont really use.Cant see it being easy to fit to a car without it 
Bizarre I would have thought have cruise control and less fluctuation in the throttle would increase av mpg?
no cruise control improves mpg, the flucttions help, when your off the throttle the cars momentum is pulling the engine so your using next to no petrol.
i asked this question before but got no answer, just got told 2 tbs, but i still dont know which is the one needed, list in my boot says i had cc from new but it doesnt work on my car