From what I can see, it looks like the '02 or HMF header. They are pretty much the same, as far as length. From the clamp location and runner length, it sure looks like it could be the HMF.
"...but how can you tell..since it is still in two peices?" What do you mean by that? The "full system" still comes in two pieces, header and silencer, if that is what you mean.
"...but how can you tell..since it is still in two peices?" What do you mean by that? The "full system" still comes in two pieces, header and silencer, if that is what you mean.
The 02 stock pipe that goes to the round fmf silencer has a floating flange and the HMF is a welded flange along with different runner lengths before it goes into one. HMF longer Stock shorter. Hope that helps... Ray