Thanks everyone! NM, the plugs were already welded nicely when I got the intake from Tom Langdon. Had seen the previous forum notes about this problem earlier. Chevy, I'll be interested in the tuning also. Was suggested that I use a Unisyn gauge but not sure how it will fit over the carb body. Langdon suggested the infamous 3 foot piece of garden hose. Bigmac, don't know about the housing. Was that way when I bought the truck. I am using the aluminum adapter plate behind the housing that Langdon sells with the water outlet to the plate under the intake. Not quite sure on how I'm going to plumb it back to the system. May go around the front of the engine or to the rear and tee into the heater hoses. Whatever looks best. Also, bought a rebuilt water pump from a website that was original to the 261. Has two water outlets to the heater instead of one. Believe the extra one was for a rear heater in school buses. That'll be going on next after pressing the pulley mount further down the shaft and painting it.
