Howdy! New guy here from Texas. I've got an 89. Rew can dually, 454 Tbi & th400 and lo and behold, both exhaust manifolds are cracked. I know this is a common problem with this generation of big blocks and I'd like to get it sorted out in the next few months. Does anyone know of any decent headers that fit trucks that have 02 sensor bungs? I've see tons of options without the bungs and I'd like to avoid getting another set of manifolds of possible to avoid having them crack again