This was asked on the general forum but about different parts then what I am contemplating. I am looking for feedback, in the first person, regarding building up a Peugeot 103. I have two types of big bore cylinders in mind, one type is iron and has a two ring piston, the other is aluminum, nickasil plated bore, with a single chromed ring piston. Which have you used, what brand, and how was it, any complications?