I can't wait to post pics, too! I restored with black powder-coat and had the raised surfaces milled like OEM, but they milled it bi-directionally on each ridge, so they have a prism effect that plays with your eyes. Very cool looking!
more to come l8r.

'87 <b>528e</b> "is" 214.5k
'88 <b>M5</b> 193k (Head removed, ready for reassembly)
Dinan gen.1
OEM Front & Rear Fuzz-buster