This is a multi-part message in MIME format. -- [ Picked text/plain from multipart/alternative ] How is the s2 radiator different from standard b3? Also, for my old 6 cyli= nder BMWs you could get the stock radiator re-cored with an extra row of tu= bes. Couldn't we do that and eliminate the need for the second radiator (s= tupid engineering, yick)??