Yeh it's strange isn't it, they're usually the ones for sale and the ones I've seen on the road. Yeh they do rust badly don't they! Think they're nice though. I really want more power :/ fucking Astra deisel today was right up my Arse until we got into some corners. Can't wait to get this custom exahsidt manifold on and then have the car mapped. Aiming for the the dizzy heights of 100bhp!