the GT2 and GTI are the same reel
For whatever reason, Penn has started calling their old GTI 320 a GT2 320. They are identical reels other than the little odds and ends they change from year to year. I've also got a GTI 330 hanging around and it's identical (other than size) to the GT2 320 etc.. etc.
My .02, that 320 I had would've been a nice reel w/ 20 lb line for stripers - the drag was nice, retrieve was very speedy and it was light enough to drift fish with one hand.
I thought it could double as a trolling/jigging reel w/ 40 lb test and I think I was wrong. The problem that occured w/ mine is that the level-wind mechanism got all screwed up and actually stripped out metal parts when it jammed. I took it back to WalMart and bought a live-liner to replace it. The jigging/trolling duties were then put on an old non level-wind penn (it might be a squidder) and I soon realized that level-wind reels suck. I'd consider trading that 320 in for a GS casting, same idea minus the level wind garbage and it will cast much nicer and make for easy splicing.