Dragon Ball Kai (Kai in Japaneses for revision) is the very same classic Dragon Ball with a wide screen add-on.
The voices are also been re-recorded.
Personally, I’m not anymore in this fantasy fighting hero type anime (more Moe type now XD ).
Just by curiosity to see how it looks like after the ‘remake’. The result, after the first episode, it’s the same as the old one.
Compare to the anime nowadays, Dragon Ball Kai is to low quality for me.
Except the OP and EP which has been remake in high quality animation, the rest looks like VHS video.
here is the OP
and ED
although it was a great classic, I won’t follow this ‘remake’, there are lots more interesting anime such as K-ON!.