I am bringing this 1966 Riviera out of retirement that has a Rube Goldberg California smog equipment set up that must have been designed by a plumber. It could not have been a GM design. The Vin # says it was made in the Flint plant while the Fisher plate says it was assembled in the EUC plant. I suspect that the smog equippent was put on at the EUC plant before sending the vehicle to California. , Anyway, I feel the car is an original car without the smog equipment since it was an add-on and I would like to remove this ugly mess and make it look like all the other Rivieras that left the Flint plant. By the way, I.know it ran for 3 years without the belt connected to the pump. The main reason I want remove this equipment is because the bracket that holds the pump is bolted onto the water thermostat housing so that you have to remove the air pump aand whole bracket (6 bolts) in order to change the thermostat (what a stupid design). So my questions : what goes in the exhaust ports when I remove the tubes? Is there anything else I need to change?