Thats the rigging kit. i can sell you a set if needed. its used to connect the fishing line to the Rigger. I removed my lee Riggers and they have new kits on them.
I currently have my 90's marlin all apart installing air condition. All looks great. I'm very happy with the Grady quality. Tabbing, dry core, foam, wire runs, bulkheads all glassed over..... no glass splinters in my arms either.
Don't convert it, that's so "bayliner"! I put a new graco 155 in mine and that pump is first class quality. Well worth the $. Swapped it in 20 minutes.