I don't know about the 7 1/2 foot Mohawk, but to me my 8' model is a 6 weight. Several years ago a member of this forum (flyfishforgoldentrout) posted about an H-I rod, the Model 1200 Queen Elizabeth, which he felt to be a true 3 weight. Shortly thereafter I found one of these rods that still had the plastic on the grip. It is 6' 9" long, two piece, and fishes very well with a 3 weight line. I caught quite a few trout on it. The rod was built in 1953. I was pleasantly surprised to find that it had a lifetime guarantee. So I'm sure if I ever break it, H-I will happily take care of me.
I showed it to Aurelio last year and let him cast it; he was pleasantly surprised.
Larry