got
www.groupbuycenter.com
you can get the aem cold air intake for around 177ish shipped (well thats for my 96 accord lx)
the price is gonna be around that range
headers are pretty expensiveyou can get the dc sports header (many people say its the best out there ) for $375 at modcar.com
for exhaust its all up to you, depends on what type of sound your looking for. ive heard good things for the apexi Ni which runs around $400 or so (either groupbuy or modcar)
youre looking at ~1k for all this stuff. pretty damn expensive, but the good thing about i/h/e is that you can get it 1 piece at a time so it doesnt feel too expensive
hope this helped