How to replace exhaust manifold?

Hello, I'm Danny.

Here is the information you requested. Here is an exhaust system tutorial for you to view:

https://www.2carpros.com/articles/exhaust-system-removal

I've attached picture steps below for exhaust manifold replacement on both the left and right side on your van. Hope this helps and thanks for using 2CarPros.

To add to Danny's answer.

If the manifold bolts are broken you can get a template that allows for them to be drilled out if they are broken even with the cylinder head as often happens. If you have access to a torch and welder you can sometimes weld a nut on the broken piece and heat it up to remove it. If you have the typical cracked manifolds there are a couple aftermarket ones that last a bit longer, but they are more money.

A couple videos on them.

https://www.youtube.com/watch?v=ZVQJhGRq-5E
https://www.youtube.com/watch?v=PR--aWBZ3hs