hey mate.....pretty sure they were sold over there.....cause there an import over here.....yep there a roots type.....with teflon coated lobes....just tryin to think of the name of the toyota they were under in the states......mid to late 80's .....im sure they were sold as toyota soarer over there cant member.....there able to handle about 15psi there is to sizes an sc12 and an sc14 the bigger one is the ideal size for the kia engine.....they also have a clutch on them (like an air conditioning clutch) that u can turn them on or off.....but its real laggy when there off..... <img src="/forums/images/graemlins/cheers.gif" alt="" />