Oh, I have been searching - just haven't found the info I'm looking for yet.

By trimming, I'm assuming you mean trimming fiberglass (not trim)???

Thanks

I just replaced my side lights with speakers. 6.5 inch Kenwood. I drilled out the holes with a hole saw to fit the larger speaker magnets.I then made beauty trim rings out of star board to cover the gap and shim the speakers out to keep them off the power sterring hoses. Be careful when cutting infront of the hoses.