No I haven't been there when that guy was there, he looks pretty dam fast he would probably take me. But it would be a fun race, I'd love to try it! The only guy that has beaten me so far was an old 69 shortbed stepside with a 540 big block in it. Flowmasters don't have any filler material, just differenent shaped chambers, it's one of the reasons they sound so good, and don't change with age (unless they rust a hole in them). I'll have to check out your runs sponsored, I can't view them right now, but I bet they rock.