I have been watching "experts" overcarburate their, & others engines since i was old enough to hold a spanner. It seems that each successive generation has learned nothing.
I ran a 1200 engine in my wife's 1000 with flat top pistons, a "light sports grind" cam, full blueprint job, stock head & a late single carb manifold with a 1500 carb right down to the stock air cleaner. This engine would not have won at Bathurst, but gave a SURPRISING performance. More than the sum of it's parts.
I later upgraded it with a 120Y type GX head & carbs that we found on an engine in a wreckers around here. [The head was modified for propper rocker oiling on a 1200 block]

Big carbs on a stock engine usually lead to big cost, big problems & big dissapointments.

Hell, i'm running dual quads on my'57 Dodge Hemi & i'm woried that the 400cfm Carter AFB's will be too big. Ahh, never mind, they're vacuum secondary types, so it'l be OK.

Balanced performance modifications that end up becoming a balanced performance engine will usually yeild the best results, don't you agree?
Chris