Yes an earlier L16 would work on a round port W58, just barely.
You want to keep the block vent pipe and the PCV valve working but what I did was unbolt the EGR from the side of the intake and grind away the aluminum. A little JB Wels to fill in any holes and you have a 'smog free' intake that is larger than the L16 intakes that didn't have this.
This comes off
You lose the PCV valve. I tapped a hole for it and used one other as a vacuum source.
A quick glance you would never know that had once been equipped with an EGR.