[Billy Nees]

A 262 is basically a 305 with a smaller bore and stroke. If you're set on building a Monza, I would call it a 77 or 78 and put a 305 in it. I think that the extra cubes and stroke would more than offset the 9 HP difference. A Monza isn't an easy or cheap car to do correctly.
The 267 can be used in a 79-83 Malibu or Monte Carlo or 79-81 Camaro. Change some trim and facias on the Camaro and you can run a bunch of different 350s and 305s in it besides the 267(do you see where I'm going here?).
To answer the original question, IMHO, the carb on the 262 is easier to deal with than the Dual-jet on the 267. I think that the 81-83 267@ 150 HP(79-80 are higher) is softer than the 76 262@ 171 HP.
I would do an 81 Camaro with a 267 and find someone smarter than me to deal with the Dual-jet.