Reply to "Firewall advise"

No matter what you add, the Pantera will not quiet down like a Lincoln. There are industrial-strength explosions going on inches behind your ears. One owner with a gear drive cam wears earplugs or ear buds. Another with straight-cut gears in a blower does the same to kill the whine & exhaust note.

If you glue anything on the engine side of the firewall door, be sure the front main seal isn't leaking or you'll have a sloppy mess every time you pull the access door. There will be no place you can set it down without oiling a surface. And in places on a stock setup the pulleys get pretty close to the metal door so the pulleys may cut their own clearance and again make a mess of any insulation. Relocating accessories makes things easier. I'd also suggest high-temp adhesive if you glue anything; the whole engine compartment gets pretty warm when driving any distance.