Hot Rods 33/34' rear axle location needed

Today's task is setting up a 36' banjo rear end in a 34' ch***is. The wheelbase has been stretched in the front so I don't have an accurate point of reference to gauge the original 112" wheelbase.

If I could get a measurement from the rivet(s) on the bottom flange of the frame at the kick up (shown lower right in pic) and possibly a rear crossmember leaf spring centerline to axle centerline.

Any help is greatly appreciated!
Thank you in advance,
-Kirk

 

This was a good starting point if you still have fender bolt holes, but I still put a fender on the frame and made adjustments.
http://www.peteandjakes.com/TechTips2.aspx

 

Thank you!! That's exactly the information that I needed!