Quoting raptorreed:
They do have a cam angle sensor, just isn't located on the head. I believe that port where the CAS is normally on 1Gs and later 2Gs, is plugged.
95-96 model years had both a crank angle sensor located at the crank sprocket and a cam angle sensor located behind the intake cam gear and bolted to the head. The intake gear on 95-96 has a shutter plate attached.
97+ model year moved the cam angle sensor to the usual 1g location except the sensor was non-adjustable and was bolted into the intake cam.
And he's correct, all 4g63 DOHC valve covers are interchangeable. And a lot of Hyundai's too.
Wiz