can i put bigger speakers in my car than what is default? if so is it like a bracket or something i can get?

in the ba?
they are 5x7s. thers fuk all good speakers for em unless they are hell expensive.
just get some adaptor plates and stick some 6" splits all round. and hav subs for the bass.

thanks bro. perfect reply

Another option is to get some Speakers out of a high series BA/BF or Fairlane with premo sound....

They have better speakers than the base model and also the tweeters on the front pillars.....
I have the tweeters but yet to find some cheap premo speakers (had some in my AU) and they were heaps better.....