Thanks Dr Terry, I would have walked straight into that one. Also great news about the charcoal canister, i will definitely look to move it under the tray during the conversion. Glad playwme asked about it. I will throw a PM at you about the Mem-cal, but have you got any other gems of info for doing a 304 EFI upgrade on a HQ - WB? From my growing knowledge, it seems like a great idea for a car that has to do daily driving.