Where has this build been in my life? Any updates in the last 6 ish months?
I am now doing a very similar cab stretch using butchered 40 hard top parts and will have a very similar shortened popout window like yours. By the looks of it I will end up with about the same amount of stretch. Having Bud from BudBuilt bend up some 3/16 corners for me. I am also now falling in love with the stylesides more and may see if Kevin can make me some side blanks to sell with a tailgate. I may shoot for something like this:
View attachment 3944085
Coincidentally, I am also putting in a 606... I did not catch in my read through or searching, but what transmission are you going to run? I am torn between the 722.6 NAG1 auto adapted to the split case or an NV3550/NWF Black Box to split case. Luke from DPUK has a manual valve body in the works for the 722.6 but could be years out.