Re: bbusch's TJR build.. Complete new interior!
Looked at the seats, and thinking you were right. They use the stock holes in the lower frame and just put spacers and studs to hold the seats in place. Really quite simple, you can see it in the MC web site... So i figured no reason for measurements.
On the pitman arm, it's still lodged on the box. That and I forgot and feel stupid I forgot, but it's partially drilled out for a 5/8 heim.
So, looking forward to seeing what you end up with.