as said the GTI and GT are the same but the GTI is slightly lighter. any GT is a fun car! I've had two. they scream to 7000 RPM easily and if you put some 15" rims and low pro tires 195-45-15 I had it will corner unreal. I picked up a header and it helped as well. check out www.teamswift.net
ive heard that, that forum isnt as "nice" as this one 
I'm not the kind of guy to bash another site, but it's a disaster over there compared to what we have here. We have a nice site operator in Eric, knowledgeable members, and a friendly atmosphere.
All they did at Teamswift was b*tch and cry about EVERYTHING, and have very limited knowledge of their platform. I was a newbie on there and had more knowledge about the car than most members there did.
(just a little background and personal experience)
I thought about getting a swift and went there hoping to get a few questions answered. Instead of answering my questions they just rudely hounded me wanting to know where the car was for sale at. I figured "what's the harm?" so told them and one of those bastards went to the guy and offered more cash and bought it out from under me. THAT NIGHT!
It was pathetic really, it was a rusted out barely running 1991 GT with no interior and all dented up. Basically a shell with a motor. The guy was only asking $600. The guy offered him $1800...for a beat up SHELL!
(trust me the car was barely worth the $600 he was asking)
I was kind upset at first but me and guy selling it had a good laugh though that the guy was stupid enough to pay $1800 for the P.O.S.. I couldn't blame the guy, he had a sucker willing to throw A LOT of cash at him for a piece of junk, I probably would have done the same.
But then the guy that bought it bragged about it on the forums, just to rub it in. He overpaid for a junkyard bound car and I was supposed to be mad I guess? It was so childish, what made it worse was the sites owners and operators were equally rude, arrogant and immature. It was the most idiotic web forum experience I've ever had.
Avoid that joke of a site. Seriously
It really, REALLY made me appreciate Zukiworld a whole lot more.
But to answer the question they are very fun little cars, but parts are getting harder and harder to find. That would be the only downside. Seriously, they are that good…but they rust like crazy so if the one your looking at is fairly rusty beware.
And the GTi's (only in 1989) were lighter. From 1990 up Suzuki had to meet U.S. side impact and saftey laws so the cars whole body is reinforced all over adding weight. Also they never came from the factory with air, it was a dealer installed option, so sadly pretty much every swift had a different A/C system in it making it costly to fix and find parts for.
Good luck, and post pics when/if you get it.
