cruise control kits start at around $200. There are basically two types one is universal and involves fitting magnets and a pickup on the tailshaft/driveshaft and the other is for more modern cars and uses the computer tach signal as a reference. If you can go for the more sophisticated kit as fiiting the magnets can be a pain. I have installed two aftermarket cruise kits on to a v6 manual Astina and the other to a v6 camry manual. You will need a second cutout switch for the clutch pedal.