I wanted to update every one the progress.
I ordered a set of grade 10.9 M22-2.5 x 170mm hex cap bolts and received them yesterday. They are a perfect fit for my 3point hitch.
I ordered them from Ziegler Bolt & Nut House (how cool a name is that?) out of Canton Ohio. I ordered these because of the look over stainless.
I have another idea instead of spending time cutting the top off and drilling holes and beating in spring pins for quick hitch bushing. I believe I can use some cat1/cat2 bushings with washers (needed anyway since I won't be using QH bushings) to keep them from sliding out of the lower arm. More importantly ,I should be able to use some spacers to keep the top hitch adapter arm from moving which seems it would not allow the lower link bots to not slide in the first place.
Thanks All!
Dan