Leaf spring bushings for 71 Cuda

[71HemiCuda]

I want to get new bushings for a 71 Cuda but I see there are 2 different sizes, a 1.5 inch main eye and a 2 inch main eye. I don't have easy access to the vehicle at the moment to measure, so I was wondering if anyone knows why there are 2 different sizes. Maybe 1.5 inch is for the Barracuda and 2 inch is for the Cuda? TIA

['Cuda Hunter]

I would assume that the difference lies in the engine option instead of the package option.  Perhaps, they are different for the /6's compared to the big blocks. 

Barracuda's and gran coupe's received big blocks as well as slanties and small blocks.