Don't bother, save your money.

Had one fitted to my 1.8 (2.0 litre is EXACTLY the same though) and it idled like an absolute pig, plus the stiffer spring in the butterfly makes it a nightmare to control the pedal resulting in 4000rpm pullaways and mass clutch slippage.

The only time they are good is if you are going for a 250+bhp turbo build or if you are building a drag car where you want to get back on the throttle asap after a gearchange. If you've got a road car (which I'd imagine you have as it's a Ghia) then it will be absolutely shit!