Okay, I find some old threads via Google, but not when searching in here, forcing me to start a brand new thread. My starting point is an old 1.6 'EZ', originally supplied in my 1985 mk2. I'm interested in what you others in here give as cues for improvements, primary focus is what the Germans write as "Motorelastizität" - improved driveability for street (and potentially a one off trackday). Increasing displacement/stroke: I plan to bolt in a 1.8 'RP' (and 4+E gearbox), seeing both 'RP' and 'EZ' are stated as having a C/R of 9.0:1, because that is what at hand from a very cost effective purchase. Exhaust: Jetex 2" resonnated ordered. Is there anything to it, sourcing i.e. GTI 8V manifold and downpipe, or is it 4-1 or 4-2-1 sooner than later due cost/effect? Head work: Seeing the 'EZ' is a 2E2 header, and the 'RP' a monojetronic (SPI), I guess both headers can be utilized for my purpose (cam will be changed). Am I right, reprofiling valves, new valve guides, bigger inlet valves and mild porting makes sense? (I read in here comments on 'EZ' being closer to 8.2:1, allowing for skimming 1-2mm of head deck) Camshaft: for my purpose, I am considering something alike Schrick 268 or Techtonics 270 degree camshaft. Carburettor: my 2E2 has actually been holding up well. Will it need any special attention, being refitted onto a 1.8L bottom-end?