I'm bulding a JC cosmo 13b block its going to be extended ported and studed with s6 rotors and oil system. As this is going into my s1 it will also have a 12A turbo timing cover
I have been thinkng of geting a Gilmour Drive pulley set but i like to idear of trying to fit the 7 rib belt of a 20b beter, however it looks like the main pulley is too big and will hit the water pump pulley.
has anyone done this?