Rite people, i have a few questions. Just removed my exhaust mani and had a small crack welded up, the mani is now back on the car and the car now sounds like a tractor( it sounds like its blowing from the bottom of the seal between the mani and cylinder head. TIME TO OWN UP I used the old gasket when putting the mani back on......is this the cause to my problem ??? Next point, the manifold is a toyosport one so do i need to order a certain gasket or will a Genuine Toyota gasket do teh job ?? And finally....What size are the 6 nuts holding the mani on ?? Thread aswell please Sorry for all the questions, this has been doing my head in Thanks