Hello there I posted a threaten the commuting forum regarding replacementparts for my bike. The said YouTube in this forum are the guys to ask. OK I have a 1988 Peugeot 6 gears in back shimanno shifters. And derailurs that I don't know the model of the shifters do say SIS light action . My question is when its time to change the drivetrain what options do I have foe parts ? Idk if it is French speced or not I just know its Canadian made. Will I have to hunt down French spec parts or can I use anything ? I ask because its French and the seat tube is a nightmare to find a longer one because it uses the 24m and not the standard 25 or 27. So I want to know will other parts be as hard and expensive to find