Dann,
You should be able to use the pulley's from the 267. The 3 groove at the balancer will only use the front 2 grooves. Farthest from the front cover will be for the alternator and water pump, next grove back will be for the power steering and water pump. My water pump pulley runs with both.
I've been running the 267 set on my 406 for many years without any issues and the new 79 has the same set-up.
Just need belts for a non air pump, non air conditioned car.
Hope this helps!
Bob S.
thanks man.