Hi James....the DS 'Seconds' HM 341's have perfect chrome and good welding....on the DS Website at the time there was a disclaimer saying that the balance tubes which link the top and bottom pair of silencers (on each side) might be too long and might need some material removing.....and after they had been been made to fit, would need to be painted.
As you will not see these areas when the pipes are fitted, I thought it was a fair bet and I was very pleased with the DS Exhausts which are as good a quality as the ones I bought from MachIV for twice the price...albeit HM 300's.
As I said, I have not fitted them yet....as my K4 is still in pieces, but I think that they are a good buy.