Rear Shock Problem, Need Help Solving!

1967 Barracuda body with a 1976 Dodge Aspen 8-1/4 axle.
I'm looking for rear shocks that will fit. So I need to find a shock with the larger loop top and a post bottom.
The Aspen shock is just about what I need (extended length etc), however the loop top diameter is too small.
So far my plan is to use the Barracuda rear shocks, change my brake line and make a bracket to convert the axle to receive a loop type shock.
If anyone knows of a rear shock that would work, instead of making a bracket, that would be awesome! I've done a year of research, to only come to no conclusion, except to make a bracket. :(

And yes. By a stroke of "luck", I picked one of the only 8-1/4 axles with a freaking post receiving bottom I guess. I failed to even think that would be a big problem. :(