They look great, but 70-73 had white & 74-76 the black - both look good on L80E light ivory or white IMHO. If you're doing a Concours & OE correct 914 resto, then go with which was correct for that year, otherwise pick whichever you prefer.
Click to view attachment > IMHO the white blends in more subtley with L80E cars...vs....
Click to view attachment > whereas, IMHO the black is more in your face with the contrast..
Sorry, but these are the best I've got in my extensive resto ref pix of L80E's since most don't photo with the lights up, & many have replaced with black after the white ones went NLA.