I've asked Eurocharged about turning my stock pulley to a 70mm or getting a 70 made. Jeffasold is my last hope to find a shop that turns these pulleys correctly. That shop grip used has had the phone disconnected. It does seem a 178/65 turns the SC too high and I have no special cooling being I have an SLK32 and it has less room than a Crossfire for aftermarket heat exchangers. Mark