You can get these brand new from R.A.R.E. with 2-1/2" collectors for around $500. I bought mine from RARE and I swear by them. I had an expensive set of headers on my car for the first seven years, then went to the LBMs and I can tell you first hand, LBMs sound better, do not leak or tick like headers do, DO NOT create the heat headers do, MUCH MUCH queiter under the hood but man do they bark out the tail pipes!

After owning both I can say without a doubt there are NO benefits of headers over LBMs other than costs. Obviously headers are much cheaper than the LBMs I guess that would be one advantage...