I got these headers off of a 91 Z28 wrecked parts car I bought. I've never seen this type of headers before and was wondering if anyone knows who makes these. Thx. in advance

 

They look like they have some very good flanges on them, my guess they may even be some early modle SLP headers, just a guess. Are there no markings or numbers anywhere on them like the flanges?

 

They do have some good mounting flanges on them. My first thoughts were that they were SLP headers, then I saw some light surface rust and a magnet sticks to them. Unless SLP made non-stainless steel headers or used a low grade stainless steel, I don't think these are SLP's. I found no markings on these headers either. I'm hoping someone will know what these are before I send pics to SLP, Hooker, Hedman etc.

 

I WAS WONDERING IF EDLEBROCK E-TECH HEADERS WILL MAKE A BIG DIFFERENCE ON MY 5.7L, I ALSO JUST SENT THE HEADERS AND Y-PIPE OFF TO JET HOT TO BE COATED

 

I'd say SLP's or a knock off of them as they are the only ones I'v seen that separate the cylinders like that and have the spacers attached.
Good Luck,
Mike