I think that car craft article would be a good place to start. As far as carbs go, it depends on if you have a blowthrough or if the air is drawn through. On the holley site, they have a carbeurator selector to help you find a carb that would work well. It kinda describes the differences.
You can go through it here, enter your displacement in the top right corner.
I went through it and came up with this one
Another option would be an intercooled procharger. It would probably be more expensive, but I think you could make about a 600 all else being equal to that in the article. With a procharger, you can run more boost because they produce less heat. On top of that, the intercooler reduces the heat of the air a lot also. At 8:1, you could probably run around 10 psi pretty easily. According to the procharger catalog, with an intercooled procharger, that can increase your your power by a factor of 1.7. 350 hp * 1.7 is 595 hp. If you look at the end of the procharger catalog, it tells you what kind of boost you can run with a given compression on pump gas. It assumes aluminum heads, but I just added a point of compression to simulate iron heads. I dont know if it works that way or not though.
here is a link to the procharger catalog I would read it, there is a lot of good info here.