Subaru EJ20 Headers?, Who's using what? Too many options! Options

[CptTripps]

Who's using what?

I'm finding a TON of options on eBay that range from $125-$800. I have no clue what the real difference is though.

Equal Length Headers or Unequal Length Headers?

Am I looking for a new oil pan too, or will the stock (2003) work?

Differences in the Turbo Pipe?

I want to buy now...just don't want to get the wrong thing and regret it later when it doesn't fit with what I'm doing.

I realize that I'll be hunting for an exhaust too, and that it'll likely need to be a custom built pipe, but the rest of the stuff seems to be pretty important.

[skeates]

Why not put together your own? I think that you can source the exhaust flanges at outfront motorsports and there are a bunch of sources for various bends and lengths of tubing/collectors. Tack them together and then take the assembly to have welded (or do it yourself if you are comfortable). I agree on the equal length thing. Makes a big difference, especially on 4 bangers. You should be able to find some header calculators online to give you a good estimate of lengths for the primaries. BTW, when people say "equal length" what they mean is "nearly equal length" (as in within an inch or so). It's more important for the flow path to be smooth than for the pipes to be exactly equal. I'm sure of the folks hear who have spent some time and $$$ developing headers for their day jobs have a lot more input to provide.