Dear Dan;
As I recall the V8 & 6 cyl starters are the same and I'm not sure what yout question is.
If the stud is in the way, simply use a long (starter bolt) etc.
They made two types from GM. Low/high torque, with the higher ones going on the 'biger' V-8s & they all had the same 'nose piece' except for Pontiac and perhaps Buick.
Perhaps the NOVAMAN can help???