'65 Skylark 300, 4 barrel. On the right (drivers) side there is a big rubber plug about 1 1/2" in diameter. Mine is all cracked in the center. Previous owner patched it up with silicon but during my "Rebuild by Krylon" the silicon came out and it looked bad anyway. Does anyone know where I can get one or two of these. All my local parts houses can't find anything unless "it is in the computer". I really miss the shop I depended upon for all my parts but they went out of business. Anyone??