318 with a mild cam, Performer intake, exhaust manifolds with dual exhaust, highway gears, and a 4-speed. Nothing that warrants a lot of fuel delivery, but wanted to plan ahead in the event I decided to boost horsepower in the future.
As far future, cross that bridge when you get to it. A 'larger' carb's slight advantage is potentially higher pressure in the intake during the top end of a WOT run. It would then produce more power IF the fuel distribution is good.
My advice remains the same, solve problem with what you have.
If you really want to try a different type of carb, by something used for around 100 - 200.
