Hi, I've not posted on here for a while and I'm not sure whether I've posted in the right area. Apologies if not. Thing is I've bought a new brake master cylinder for my 1.6 gti and the car is in the garage being worked on. I've now realised that the 1.6 and 1.9 gti may have different master cylinder bore sizes, 19mm and 20.6mm although a compatibility chart I saw on one website seems to suggest that both versions may have had 20.6mm version until 1988 after which it may have only been spec for the 1.9gti (see below for the chart). The question is whether members have any experience with different the two different bore size cylinders and whether I'm doing right fitting a 20.6mms bore unit to my 1.6gti? My intention was to stay original and I'm guessing I may experience a shorter brake pedal travel with the cylinder I've bought? And a firmer push on the pedal required for the same level of braking? Thanks in advance for any help, Pete