Jeep 4.0 intake/exhaust manifold gasket & Exhaust manifold replacement PART 1 

I had no idea even how to begin until I watched this video, thanks for the help!

You can wake up some dead ponies by port matching the intake to the gasket. Little bit of a bore to throttle body opening. I am a fan of the straight through bore of the throttle bodies. That fuel rail could be upgraded to one with a return line. That would help with vapor lock if it's an issue.