Yea its a stock block and heads ls1.

what kind of engine you got? if its a ls1 then i know now what my car sounds like haha. nice vid

Thanks, beileve it or not I have seen more cops in the last week since I put the headers on and took off the cats than I have in the last year but I have had no problems with them.

Sounds sweet. That should attract a s-load of cops from blocks away LOL. I could here the resonance bouncing off the trees when you gunned it, probably sent the wild life running for miles. I love it.