Port-o-sonic or Holley Street Dominator?

I definitely appreciate everyone’s input and advice! I picked up the street dominator off eBay tonight for $225. Once I get the engine put together and installed, I think for the fun/knowledge/experience of it, I’ll run my current China-gap intake and the SD back to back (with a carburetor) and see how those two intakes compare. Who knows, that may show that I should put bungs in the c-g and use the SD in my Scamp later on. Unfortunately I’m just in the early stages (only a dirt pad so far) of building my shop at our new place, so it’ll be awhile before this all comes to fruition.
I think that's the smarter choice of the two for your build. The Port O Sonic will blast it past 6K, but I don't think that's where you're going. I actually believe up to about 4500 or possibly more, the Street Dominator might have the advantage. Certainly I believe on a mild build like yours. I have an almost NOS Port O Sonic for a 351 Cleveland 4V engine and that thing is one hellified lookin intake. I think Offenhauser advertised it to pull past 7500 and I'm sure it will.