have had a long job sorting a spotlight lense for 5 3/4" low profile casing , when purchased had one original lucas fog and a hella lense as a spot, our wof requirements are two spots switched via high beam switching which i will do with relays as the stalk switches in the car will probabely burn out if wired with spots as well , so after a lot of research found a matching hella lense their part no is 9.2865.01 , and i suspect it may have been fitted to a hand held spot thus making it a low profile one. the green label lucas frame may have had a lense with the dome in the centre so this option may not suit if total originality is desired hope this helps
