I've been wondering if my 97 F350's t-case has the mechanical speedo provision. I was under it today but forgot to look... Figures...

I want to swap it into my 86 and want to use stock speedo. I know in 92 they switched to the ABS tone ring and on 2wd transmissions they deleted the provision but I wonder if they just plugged it on the t-case. It's a BW 1356 I believe.