That Gentlemen is exactly what this hobby is all about.
Putting stuff thats not avail. anymore back into circulation for other bolters.
When I got my 50 1ton parts truck from Ohio I had to justify the expense/distance and trailer to get it.
Basically complete except for engine/trans/bed
No bottom left on the cab(PO had stored 5bags of fertilizer on DS floor,add ina bad w/shield leak basically draw a line around the cab at thelevel of the lower hinge pockets,GONE

was gonna leave the cab there to be crushed,VERY GLAD I DIDNT
Entire roof from the A pillars back to the beltline saved a fellow bolters cab after a tree fell on it
Got really creative with sawzall to the cowl to save the dash and cowlvent area that was swisscheese rotten on another AD
Stuff I was gonna cutup anyway Saved 2 ADs
What justifies doing a job like that is all in weighing in the cost factor for parts and also availability.
In both cases a decent cab with less damage was not available.The one that took the tree hit had already had the rockers/corners/floors repaired and the other only needed a dash panel replaced
If you got the parts/pieces avail.DO IT!
I guess it all comes down to how far you are willing to go to save your truck.
Regards Steve sr.