Hi, have a wee problem. I've a 98 t4 1.9td, 223000 on clock. Symptoms I'm getting is a rattling under the cab, slight loss in power and engine seems slightly louder. I've narrowed the rattling down to a pipe behind the front drivers side wheel. I also get exhaust fumes on occasion into the cab when engine Is idle. I've looked up on google and it seems like a crack in exhaust manifold. Anybody have any ideas how much one of these will cost to fix ie parts and labor?