I am installing a 5.0 in my 92, and I am trying to keep it legal and want to know if anyone has done this and had the REF say it is ok. I am in Socal. The problem that I have is the conversion headers are not legal in cali, so I am looking for someone that has done it before. I believe the exhaust manifolds from a 96+ explorer 5.0 will work but cant find any used ones, and new they are $360 each. Any help would be great.