I would like to thank Bill Lane for giving me further insight, this past weekend, in how the PRV-6 is put together. Bill showed me first hand how the intake assembly comes off the engine and you can service the areas that are located under the intake. ( Water hoses, vacuum hoses, thermal control valve, and intake seals) After experiencing this procedure being done, I can say that the job is time consuming, but not that difficult. I would also recommend to anyone out there that is considering having a tune up on their engine done, to service this area as well. When the intake is off it also makes access to the spark plugs and distributor so much easier. Thanks again Bill for sharing the knowledge, Robert Starling Vin#5252