Just sell the driver and buy an 8v gti, or go the whole hog and buy a 16v or a G60! It'll cost you less than a conversion will. Carb and injection golfs don't really have that much in common, besides the shape and the back seats!
Luckily I parked my driver into a stationary vw polo, so I was forced to buy another car, so I bought an 8v gti on a J plate.
I have a slight problem though - underground and multi-storey car parks - I keep setting alarms off with my exhaust!!!