I was thinking of getting a one piece downpipe as theres one on ebay at the mo. Any body think these are any good? The only issue I got is its only a 2" bore and im running a ktec enlarged elbow and 2.5" pipe anyway . would I benefit in anyway. Running a t3/t28 turbo so im looking to get my lag down as much as poss.. are there any 2.5" ones out there any more?