These are stock 87-93 aluminum, valve covers on a 94 engine. Oil fill is a little tight but works. We are running a 87-93 Trick Flow Track Heat intake with a 94/95 intake elbow. As for the alternator, we ran the stock mount (with the tensioner re-clocked) until rebuild of the motor a couple years ago (I'll see if I can dig up a picture of that). At rebuild time we changed the front timing cover to the 87-93 and went with a Summit Racing Alternator mounting kit.

20190113_123329 by i.e.427, on Flickr

20190113_123338 by i.e.427, on Flickr