The belly pan was fabricated by the original builder. It is cool but it makes some things a PITA. Like to get at the valve covers you need to remove all the fabricated side tins, Which is not easy. The red exhaust hose is venting hot air coming off the doghouse oil cooler to the underside of the car. There is also a scoop coming off the drivers side deck vent to channel outside air into the fan intake.
The belly pan is kinda cool though.
I want to get rid of the black doghouse shroud. It has the original thermostatic ducts with the spring. I dont have the $$ to do the porsche style fan and shroud. But I might get a new doghouse shroud and paint it to match the car. and remove the deflector baffle crap. I have an external oil cooler, and my oil temp is fine but I worry about my cyl head temp. my vdo CH temp gauge says it runs around 300 degrees. I think the thermostat and baffle thing jams sometimes and doesn't open. plus it rattles. There are replacement doghouse shrouds in the cb catalog that look like they dont have the moving deflector gizmos. I want to get one of those and paint it up nice.