November 2021 I had two new cabinets (to replace the wooden tackle draw cabinets under the seats) made up for me in Seafoam-colored Starboard by Fin Addict Marine in N.C. (referred to me by Grady White)
Fin-Addict Marine, Inc. builds unparalleled quality products that meet the demanding conditions of the marine environment from replacement parts and accessories to OEM fabricated plastics products. Product types: doors, rod racks, tackle boxes, glove boxes, & hardware.
finaddictmarine.com
Not cheap, but excellent workmanship and quality!
Contact:
Cody McLean <
cmclean@finaddictmarine.com>
Cody probably still has the drawings and specs from my job on file....not sure if the Gulfstream has the same sized opening below the seat, but it looks similar based on your pix.