I have these two engine pulleys. They were on a clone 1970 Hemi Cuda from about 20 years back.
They are factory pulleys, but were chrome plated at some time.
Crank pulley has the K6 stamped into it and measures on the larger diameter approximately 6 5/8" and smaller diameter 5 5/8"

The water pump pulley measures about 5 1/2" and has no marking that I can see.

I'm looking for info as to exact year/ engine they are correct for?

TIA .

UPDATE: 69-71 Hemi with powersteering

Thanks Jason for the info.