Here is a pic of the 454 holly 4160 converted to a 4150. Much better then the Carter AFB.
better i would say is more about how you use your vehicle and what you want to do and what you value
Edelbrock is simple but that very fact is a helpful and selling point to a lot. (me one of them) not having any gaskets that can leak fuel below the top of the carb is quite good and it can go far for safety if you especially had a infrequent use situation for the vehicle
But set and forget seems to be a phrase not associated with holley(Ive heard) but ive also heard of the endless opportunity and precise changes one can do, and the fuel rates and the enrichments (esp with forced induction) that there is no other to the great holley
and then if you fear what lurks in the dark some wise spirit may come out of his oldsmobile and start hurling the great reality how 1 carb design operated
a lot of vehicles for a
lot of years where it had
unbeatable driveability and mpg with the ability to work with all the countless emissions doodads
to that end, the qjet, on the emissions stuff...
assuming you can find the spec, the part, the adjustments, and you can have yourself a CARB approved truck when you started with a engine swapped parts rolling chassis lol!!