replacing stock speakers

Im replacing my stock speakers and was wondering what sizes ill need for the front and rear of a 98 integra ls 2 dr. Also is it necessary to replace the tweeters thanks

get 6.5" speakers to replace the stock. and you dont have to get a component set, but why not. or you could just get full range speakers and unhook the tweeter, or get a mid and wire it with the existing crossover(if its separate from the stock woofer).

Buy some decent 6.5 inchs components and your set...