I came across this Okuma GT65 reel. I was wondering if anyone knew anything about the history of this model. I am not coming across much online. It is an older reel and fairly large.
That's an oldie by Okuma standards. Unfortunately I'd kinda classify it as coming from before when Okuma really got things together in terms of reel manufacture.
It will be a pretty simple reel. If it's still working OK I'd say go fish it until it dies. Any parts that aren't generic (i.e. bearings) will be near impossible to find.
EDIT: I'd say it's late 90s or early 2000s. Around then, my understanding is Okuma were primarily an OEM producing white-label reels for whoever wanted to put their name on one. I remember seeing one of their catalogs from around that time and it had dozens if not into the hundreds of different models. They were low-cost reels, I don't think they were particularly bad but they also weren't setting anyone's world on fire either.