I’ve been doing a full body off on a 51 half ton for 6 years now...about 90% mechanically complete thanks to many of the threads found on this website...still have tons of body work to go though...I had been searching the web for about two years on an easy fix for these and did not want to get rid of my 52’ doors. 51’ cab is complete except for striker plates and this should get me on the road. It would be interesting to know if you guys just eyed balled it or what your measurements were on it...us milienials need all the help we can get...