Spark plugs are generally in the center of the combustion chamber of a three valve overhead cam style head and if you're going to modernize the head on a slant, you might as well go to sequential port fuel injection and a DIS type ignition.
After all this, even if you were to keep enough stock pieces to retain the original oil pump drive, remote mounting the oil filter would be a piece of cake.
Most likely, if you're going to the trouble and expense of modernizing the engine with a multi-valve overhead cam head, you're probably going to ditch the original cam blank, modify the oil galleries and run a dry sump anyway!
