Pal, I have 2 sets of CORRECT 68 340 valve covers , one set is on my lo miles 68 340 that I
've owned for decades and the other set I have as a spare. The CORRECT 340 covers have a large rubber coated sheild on the right side (pass side) for the wires that go to the temp sender and alternator. This is to protect the wires from the heat crossover. AS someone suggested above look in a 68 parts book and there are different numbers for 273/318 covers and 340 covers in 1968.
