Hey Alan...
I went ahead and used the "wrong" blades YearOne sent Hoss. Since they were 16", I just replaced the actual rubber insert. Now, if you could, please, I need the proper routing for the hose and then a shot of the underside of the hood where the hardware is all located. I googled some pictures, but not totally clear. Both parts of the FSM for '71 don't mention the wiper system, which I find weird..... Maybe I missed it.....
Thanks...
Troy