How are you planning to do it? Theres a few good methods.
I think using a pin stuck in the tire tread would get you the closest. I've seen a youtube video showing a string down the side parallel to centerline.


Kicking self for selling off my Taskforce trucks.
Still looking for an LCF or conventional big bolt in decent shape.


As of 10-26-2022, A 55.2 Taskforce long bed now the work begins