Had SPD adapter installed today. Wasn't sure if I should with all the mixed reviews and skeptics. But truck was nearing 3000 miles so I took the plung. SPD was great with fast shipping and included everything needed. Shop did job in 2 hrs thanks to YouTube video posted on this forum. And right away noticed difference. Truck pulls harder and smoother. For anyone not sure my ass dyno from driving truck daily to when I left shop says this is a great upgrade and I recommend to anyone on the fence. Thanks SPD!!