Add your abody driveshaft length for quick reference

I have a 66 Dart with 410/904/Dana60 111"wheelbase,measure 52 1/4 center to center.(with 1350 u-joints)When I had the 8 3/4 in the car I was using a stock 73 swinger 318/904/7 1/4 driveshaft(108 wheelbase)worked fine for many races.