I'll go fishin', but if you have a link, I'd sure like to see it!
Dan, My super 6 has that tap on the 6 runner, but the older 2300 carb I have has no provision for intake vacuum. Whats a good plan to draw intake manifold pressure for EGR?
If you won't be using the EGR system (which seems a pretty safe bet since your 2300 won't have a venturi vacuum tap to operate the system), then either get/make an EGR blockoff plate and drill/tap it for a brass pipe-thread-to-hose-nipple fitting (3/8" hose diameter) or if you're handy with a welder then forget the plate, just weld up the EGR exhaust port and tap the round EGR inlet port directly.
H'mmm...interesting idea. Haven't thought about that one. Disadvantage of that would be that you'd be putting oil vapor thru the carb, so you'd need to clean it more often. But you're running boost, so a conventional line to the intake plenum will not evacuate the crankcase when you're under boost. You may want to take a look at how factory turbo engines (especially carbureted ones like the Buick 3.8) have their PCV systems plumbed.
You can vary the rate of opening on those SU's by changing the viscosity of the oil in the dampers
You can, but I'm not sure it's necessarily a good idea. I am not an SU carb expert, but my understanding is there is a pretty narrow range of recommended damper oils.
