The differences between digifant and K-jet....
The 8v golf changed from K-jet to digifant in 88, on the E plate (I think). K-jet is mechanical fuel injection, whereas Digifant2 is fully-electronic injection. Digifant suffers from a flat-spot just above idle which we know as Digilag, but the ECU can be reprogrammed to correct this. K-jet doesn't suffer from the same problem but you can't alter the ignition timing with k-jet, sometimes causing problems with fuel below 98ron (ie normal unleaded).
There is a marginal performance difference between the two systems, the K-jet being quicker to 60mph.
The digifant has a reprogrammable ECU so you can remove and replace chips to improve performance and remove digilag.
To look at, as already said, there are a fair few pipes coming out of the top of the airbox on the k-jet. There is little point putting an induction kit on the k-jet, it often upsets the system.
The mk2 golf changed from having 2-piece door windows to one piece during 88, so some cars have them, some don't.
I'd go for the digi 8v, although the k-jet 16v is in a different league entirely.
I reserve the right to be slightly wrong!
