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After talking to my inspection station here I'm happy to say that I only need to have a catalytic converter in the exhaust line to pass state regs. So I WILL be removing the air pump system
That wouldn't be so wise or productive as you might think. The air pump takes almost zero power to spin, and doesn't cause any measurable loss of usable power or any other negative effects. Without it, the catalytic converter is much less effective and stands a good chance of overheating, melting internally, and severely restricting exhaust flow. This is one of those devices that's worth leaving in place even if only for selfish reasons: Even if you and your state don't care a feather or a fig how much pollution your truck puts out, leaving the air injection intact makes the truck more tolerable (less stinky) to be around when it's running! 
Depending on the exact AIR setup your truck has right now, it might be worthwhile to modify it slightly in terms of where it injects air, but dismantling and removing it...? Naw.You may want to read through this post before you make any decisions on which emission control devices and systems to keep and which ones to discard. Certainly there is a lot of room for improvement in your '85, a great deal of which comes by removing or altering certain emissions-related components—chiefly the carburetor and ignition system, and of course a lower-restriction exhaust system with a thoughtfully-selected catalytic converter). But removing items just because they are emissions-related generally isn't the way to have fun, and can in fact cause undesireable consequences.
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Also planning to do a valve job and replace the camshaft.
Not a bad idea if a valve job is needed. The stock hydraulic cam is pretty wimpy, and usually installed in a randomly-retarded position even when new (the timing gets worse as the chain and sprockets wear, not better), so it might interest you to know that the Erson people are happy to grind you whatever hydraulic slant-6 cam you'd like as a part of their special deal for slant-6ers. And it'll be worth your while to use a quality timing chain and sprocket set and spend the time and effort to get the cam degreed-in accurately.Quote:
I might get a set of Dutra duals
Great idea. Y'know, they make high-flow catalytic converters with two inlets and one outlet that'd be perfect for use with Dutra Duals. Take a look at the Catco #2613.Quote:
Ill see what I can do about finding a better carb with the vac advance I need.
Well, are you looking for a 1bbl or a 2bbl?