This will make a great addtion to the Growler and looks like fun to make. It's an aftermarket rear pan I ran across on the web.

Here's a photo mockup of the rear pan on the Growler. The pan is sold by Prowler Products by Gary.

No shortage of photos for this project. Turns out this is the best for measuring..

Here's Gary's product right out of the box.

Composite photo showing the position of the rear pan. There's a little ledge making a good stop for the pan.

Stuck a few pieces together to figure out the rear pan.

Backside of rear pan. The center area is nearly cut through and ready to knockout.

These exhaust ports were made from Papermate pen ends, they look too small.

Starting to piece together with some sheet styrene.

Carved from thin styrene the grill parts are  ready to glue into place.

Had to open it up for the trans cooler.

The exhaust posts were replaced with RoseArt great grips pencil.