The Hogan style intake is what Does10's ran.
Your system is similar to fast64rancheros and JTurbo's
As long as you copy the image link when it shows on your screen in below 800 by 500, it'll show up if you use "" around it without the 66 and 99's
""
then add
"https://i.imgur.com/lQnilNi.jpg"
Follow the basics first. All advice given is good, although I'd never, ever reduce the size of a carb on a turbo car, Does10's did it, and loved it.
A carb is a fuel supply device, not a restrictor plate. Restrictor plate engines are found in NASCAR, F1, LeMans and the World Rally Championship, and they area rated between 129 and 85 cubic inches of engine per sqaure inch of restrtor plate.
They exist to stop people going faster. On a turbo engine, when the area of the venturis is below 1.375" each (500 cfm), it's 2.969 sq inches of area serving a 200 cube engine, or 67 cubic inches of engine serving 1 sq inch of plate restriction.
200/2.969= 67 or near too.
Add a 350 cfm carb with 1.1875, thats 2.215 sq inches of restriction, or 200/2.215 or 90 cubic inches per square inch of restriction.
Production turbo carb engines are never restricted that much. If the specs are greater than a 85 cubic inches per 1 inch of carb venturi, then its a restrictor plate engine. It might help you get on boost, but it'll drive the air correction holes in your carb crazy, and you'll then be constantly goijg over other stuff to fix it.
Keep the 500 cfm carb, and check that the fuel delivery is not aerated on boost. Your intake manifold could be causing other issues, but thats okay....the carb has to deliver fuel, not restrict air. The 4412 makes 352 hp normaly aspirated in a good 289. Its got all the good stuff to ensure gasoline flows at wide open throttle.
I'm all for being conservative, but never go back from the optimum on Breathing, Exhaust, Ignition, Gearing, Head flow or cam Timing.
Fuel delivery is simple. The Italians got it all figured out before WWII. The worst thing you can do is go backwards on Breathing.
It might be safer to avoid torch downs from too much fuel at the delivery point, turbos that are not Fuel Injected are a risk when you go over 14 psi, but most fuel trim is making sure you do the basics right, and then adjust the well tube holes if all other avenues didn't help you.