I am running a 80672 as well in a 540.
A nice feature is that all jets can be replaced via some form of screw in jet.

Holley in my opinon really missed the mark on the out of box set up on this carb.

Also the design of the metering block that feeds the idle well from the main well is of poor design. Bo laws divorced metering block is probably the best solution , but why on a $1000 supposed trick, out of the box carb.

Most important is the over emulsification of the main well. they use (3) .026" emulsion jets,( look at a 4779 metering block, it uses only (2) emulsion bleeds, and is probably one of the best out of the box Holley carbs ever sold.) a .026" kill bleed and a .031" hsab.
The problem with this is the fuel curve leans out on the top end. Too much emulsion jet.( for large cid engines)
a .026" hsab really helps out the fuel curve.
I have disabled the intermediate circuit as it was extremely rich. and with the over emulsified main well the high speed circuit transitions very quickly from the transition slot to the annular boosters, making an intermediate circuit unnecessary.
WARNING!
Dont even try an ultra dominator without a wide band o2 guage.