Exhaust system questions

[EuphoricSky]

Hello,

I'm looking at replacing my stock exhaust system on my Civic EK1 1999 but first I'm just doing some research on whether to get the whole thing including headers, just a bolt-on catback (so I can install it my self), or just the muffler. I'm looking at performance over sound.

I've read on here that installing the headers and a 'bolt-on' system is a manageable DIY job, but does that only refer to a bolt-on system or can I install any catback exhaust myself? Also with a catback would the stock muffler be able to bolt on to the pipe? (for an easy switch when defected)

I'm looking at three brands: Apexi, Xforce and OBX.

Just wanted to get your guys opinions, recommendations and also places to get a full exhaust system including headers installed in Sydney.

Thanks