IMO get some quality stuff or you might be paying for it in the end

Spoolin Performance
Where I got my manifold from and he also has just about everything else you need

Phearable
Get your fuel pump, injectors and Hondata here

Treadstone Performance
Some other Misc. stuff here like boost tube, flanges, piping, oil lines

I got/will be getting all my stuff for decent prices off of those sites and Honda-tech

All you have to do is find the right places to look and you can get quality stuff for a good price