I think anyone should be able to voice an opinion without being belittled. It is up to the OP to decide what to do with his time and money. The valid point is: Adding a 4 barrel carb is more complicated than one would think. However a "67" 273 is almost 9:1 compression and should have a solid cam, which lends itself to simple mods that should give more performance and mileage. It is also hard to argue with a 48 year old car that always starts and gets to point A and back without a second thought.