rrcats.com is where I sell mine. Send them a picture, they send you a quote. They even pay the shipping cost to get them there. I sold them the old cats from my 2004 a few months back and got $350. Not bad since the old style import cats aren’t worth much, but much better than throwing them out. Great company, I’ve dealt with them several times over the years.Not long after I bought my truck, I had to put new manifolds on. I knew that was a possibility when I bought it. Anyway, I just threw the old manifolds and converters in the corner of the shop. But what can I do with them? Do they have any value other than scrap metal price? It would be nice to get a few bucks out of them to go towards something else.