Close but not exactly — the first (maybe?) 40% of the 17-6 had the classic ribbed target barrel and Goncalo Alves Target stocks. The latter half, a bit more than half of the 17-6 was the full lug barrel and the Combat stocks.For the model 17 you will need a dash 5 or older if you don't want a full lug barrel. You will probably see more dash 2,3,4's in long tube. You already know how nicely balanced the long tube K frames are with your 14. Good luck with the hunt.
My 17-6, six inch, is the classic style, it has a BBJ-serial prefix. It’s a 1988 production.
I cannot say if they made these in 8-3/8” but I will also agree (based on my 14-3 Long Tom) that it should balance beautifully and doesn’t feel gangly at all, unless maybe you were holstering it.