so, for the 2nd time my XJ has a crack in the exhaust manifold. What are you guys running as replacements? Is it worth high end ones? Or are stocks with heat shields good enough for a 145K motor with no other mods except a drop K&N, high flow cat and dynomax ehaust?
Also, anyone into making down pipes from manifold to cats? Or anyone know anyone/ anyplace with a nice set up?