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.

[DBCooper]

You need to be a little careful with aftermarket headers. First thing make sure there's meat in the flanges, some of the cheap ones use real thin stock that's guaranteed to warp. And some of them protrude down quite a bit further than the stock exhaust. I had one, but it was more trouble than it was worth to adapt it. My son has one, couldn't use it on his VW Bug because of clearance under the car, though it's more critical in a Bug. You might want to ask the vendors the measurement from the floor to the exhaust flange when the header's lying flat on the floor, just to be sure. And be a little skeptical of headers that don't have that expansion section between the sides. The engines expand with heat. There's a lot of pipe between the sides, it's true, but the OEM has a joint between them for a reason.