It is the comp cams 21-223-4 kit, its the 268H XE, the radiator has a lifetime warranty on it, I asked the guy about it he said they pay for return shipping and will send a new one, they pressure test them in their shop before shipment. They have a shop called entrophy radiators also that makes radiators in house but they want $500, just cant afford it, I thought I would give it a shot, they are not like champion claiming they will cool 750 Hp. At least they were honest, I bought a $400 piece of garbage radiator that was supposed to be custom made it turned out to be complete crap, looked like a 5 year old welded it. But the guy gave me my money back so I won't bother saying who it was.