A few weeks back my exhaust manifold developed a crack. Redline Landcruisers had a good used manifold. They cermaic coated my intake and exhaust manifold and had it machined for me. I also installed their accelerator cable set up. Lastly, the housing between my throttle body and air cleaner was a homemade deal. I was able to find a better set up off FB marketplace. I used the base plates and top along with my old housing to make the seal so much better.