Only s13 valve covers were painted that color, and have three top bolts, where as s14 have 2 on the top and three on the back. and the reason an s13 diz wouldnt work is because it uses an external coil, where as an s14 uses an Internal Coil, they look almost identical but the s13 has 5 coil wire pulgs (middle one is for the External coil) the s14 only have 4 one for each spark plug wire.