if its an A-body 8 3/4 then it will be the same length as your current rear end ....mosy likely the 8 3/4 will be SBP ...they never made an A-body sized 8 3/4 in BBP from the factory ......so unless someone converted after the fact ...you will run into that.
Giving a car a name is a great thing to do ....i name all of mine and wont work on a car with no name.
a name gives it personality and life and brings it in as part of the family