The exhaust system will most likely consist of conversion-specific headers. You can find conversion headers at Summit Racing, Advance Adapters, and many of the other companies listed in the guide. Depending on your headers or exhaust manifolds, the steering might have to be moved over or run through the header. The exhaust will have to be redone as well. The exhaust system will vary greatly, depending on what model and year the truck and engine are, as well as what state you live in for applicable smog laws.