Hi, ive got a leaking header or gasket but whilst it was off i contemplating replacing it with a aftermarket un equal manifold as was wondering if it worth it or keeping the stock item. Car is a 98 uk turbo with cat back system and k&n only.

 

At the power level you are at, it would be a backward step to go to tubular headers. Best go for a replacement original header section or better still, go for professionally ported headers.