I'm thinking of replacing the Beckson ports on my '86. Took dimensions of them at the boat last week. The cutout appears to be about 12 1/2" x 5 1/2". Searching on the site it looks like others may have replaced theirs with Lewmar ports. I'm looking at the size 0 which has cutouts of 6 1/8" x 12" or the size 1 cutout is 6 3/4" x 13 5/8". Has anyone used either one of these?