IFS Installation Question - 58-59 Chevy Truck

[houston54]

I will be installing the Fatman IFS kit on the 58 in the near future but reading through the material provided and various posts on the internet I am hoping to find someone who has installed such a kit and can identify how they located the axle centerline.  

The 58 came to me without any front running gear.  

Is there a "landmark" on the frame or a dimension from the front of the frame or cab mount that someone can share with me?

Would like to see pics of your installation also.

[enjenjo]

On the one I have in the shop, it measures 28" from the front edge of the front body mount to the axle centerline. It's been messed with, but looks right.