Looks like you're new here. Need more info.
If your car is close to stock then it probably has the small bolt pattern, 4", or SBP. Not impossible to overcome but you should think further down the road (nice pun right there)
Spending money now on SBP stuff and later deciding to upgrade the brakes and converting to Big Bolt Pattern (BBP) will mean doubling your cash outlay. There are more options if going BBP by far.
IMO, you should set some goals for what you want your car to be and build to that. Are you interested in better handling or more of a drag strip look?
Need more info. And there are LOTS of threads here on this subject. Its been beat to death.