I put stereo and speakers in my 1993 prostar. the holes were already cut out in the wood on the side bolsters, just had to cut the vinyl and that was difficult mentally but came out good. try to feel around to see if yours has places already cut out.
1993 Blue Stars and Stripes Prostar Powerslot 351HO
Mastercraft: Face It - If you are not a good skier behind this boat, you are not a good skier.