Most of my motor is original, still have the Carter AFB and I plan to (well... hope to) keep it. The intake manifold has some kind of insulation tucked under the carb, not sure what it's for. I just had the carb rebuilt and properly tuned. I 'm good to 180, then once I get any hotter... it starts loping in traffic and is hard to start once it's shut down. My plan.... - I bought and will install the Felpro intake manifold pan that has the blockers for the heat riser. - I already saftey wired the heat riser in the open position. - I will replace the water pump with a high-flow unit and add in wetter water, also running a 50/50 mix. I think I have all anti-freeze from what it looks like. - I'd like to get a 1/8" insulator carb gasket, but I can't seem to find one for a Carter AFB - I am running a 22" electric fan, which works good, however, there is little air movement in the engine bay at idle, so I plan on removing the flat metal plate at the front of the intake manifold pan and expose the underside of the intake manifold to as much air flow as possible. - If that doesn't work... put the original mechanical fan back in, with the new high-flow pump, I should be ok not having a fan shroud, as my car did not come with one. - Possibly re-route the fuel line from the production break to the back of the carb from behind the engine, and install an electric fuel pump... this is LAST ditch. I don't want to alter the originality visibly. I based the whole look of the car on being discreet. Any thoughts/advice on these ideas... maybe something I am missing? Thanks as always!