I would like to have some valve covers for the 3.8 that don't break so easy. I have replaced mine 3 times, and 90% of them in the junk yard are broken as well. Not sure what material they are make of, but paste seems to be the binder.
BBK makes some 300+ dollar cast aluminum/chrome ones, but most of the aftermarket steel/chrome ones are for CFI and not configured correctly to work with the EFI engines.
97 Mark VIII LSC/Silver/Gray leather
97 Cougar 4.6 Sport/White Opalescent Tricoat Metallic /Gray leather down but not out?
89 Cougar LS 3.8/Oxford White/Gray velour/HG need replaced AGAIN
00 Grand Marquis LS/Vibrant White/Gray velour
63 Falcon 302/black and rust/shed isn't moving
82 F-150/Oxford White/dumb VV carb doesn't pass emissions