Driveshaft lengths all mopars

Thanks guys..n gals..73 chgr 383 727-8 3/4 was 1st one I was looking for a buddy needing a driveshaft and had a few laying around and trying to help him out and I'm 60 miles away from him so if I can get him one matched up he wont have to have one shortened or re-fabbed and dont want him to make the trip for the wrong one,if memory serves me right it's 51" or 51 1/2" but cant find my info sheet I once had...and I have one thats 50 3/4",some 54-58" and of course I have my dart ones from 44-48" give or take...thanks