I just installed a set of alpine Spg102C and used my factory rings which I modified but can still go back to the originals if I want. Hot glued them to the rings haven't had any issues. Even used the original harness.
Mine had the component tweeter in the grills but deleted them since the alpines where coaxial 2 way speakers. These grills are from a 2002 base model.
The 4inch alpines are a major difference from the original paper weights...
