Putting in the 383 will be a challenge. Does your car have power steering? With putting in headers the clearance is nill. I had to take out my power steering unit. I had to use Flaming River manual. The Idler arm, Center Drag Link, and Pitman arm will have to be changed. Because the Scamp wasn't built for a 383. I used a Sidewinder fan because of lack of clearance between radiator and block. Putting headers in we had to take apart the center drag link. After we had initially installed it. If using TTI headers and their exhaust systems. Start from the back installing the exhaust system.