Crazy question but. why are there so many different looking valve covers? I found a much nicer one than I had and swapped out to it, and the screw holes etc. match, but the filler hole is in a different place. is this is big deal? I dont see any interferences etc. also the one I got rid of had a tap in the side w/ a 3 inch rubber hose hanging out of it that was plugged, this one does not. the other one didnt seem to be being used.
