Since 1980 I have been the second owner of a 75/6 (90S equipment) and we have since completed nearly 300,000 km together. Never had trouble before, but all 100,000 new KW bearings and new upsize pistons as well as the usual (heads, clutch etc.). Now the next overhaul is on, the cylinders are at the end (2nd level). My question is now: Do I stay at 750cc with contact ignition as before or follow the recommendation of my workshop, on Siebenrock Power Kit 1000cc & Silent digital ignition umz So far, the cow has been running absolutely without problems for 37 years, only this stability remains with the increased torque? I am a relaxed driver, who can always be warmed up, but has also driven for many years for cost reasons 30s single-range oil… What experiences have you made. Best regards