Yep, both the hydroboost brakes and the damn firewall insulation are from its diesel heritage. When I finally get around to doing mine all that stuff is coming off.
I'm going to leave the hydroboost. I didn't get to drive the car as much as I would have liked before I tore it down but the brakes felt fine to me and I like how little space it takes relative to a vacuum booster. The car needs too many other things worse.
Did you ever replace the door panels, and if so, what do you want for the "casket handles" and woodgrain panels with the switches?
The interior project is on the horizon. I have buckets and a non-pillow top back seat out of a Monte waiting. I also have a floor shift column and a late 70's Trans Am steering wheel (black) with an arrowhead horn button instead of the firebird. After I'm done with the drivetrain restoration I hope to enjoy the car some and then I will do the interior. When I do, I'll save the casket handles, woodgrain panels, and woodgrain switch panels for you.