No machining necessary to be carried out on the engine block for installation is installed like a traditional gasket, paying attention only to the direction of the ring.
Head gasket with separate rings type "Cooper" for engines with Prisma type heads Lancia 1500 aspirated that are usually transformed turbo. Head gasket.
Reinforced head gasket with separate rings for Renault 1600 ALPINE engines with piston measuring 82.5 specifically made. Gasket type with support rings.