I have ordered rear stop light LEDs after reading an article in Miscellany. I was also looking at the Wolf Performance headlights as I believe it is an MOT fail to place LEDs into Halogen headlights. I was just looking to keep a spare of each normal bulb. I have looked on the Classic Car LED website, and although the year only goes to 1993, the Lucas parts catalogue says 382 and 380 so I will be buying the Bosch kit that includes a H4 bulb for the time being.
I think you are wise to do this. Although LEDs have a long life, as with all electronic stuff, a few may fail prematurely. Sod’s law…that will happen when far away from home where it might be difficult to find a replacement!
Referring to your OP, In addition to bulbs, I would add a spare diode protected relay to your emergency stock, as I known many more failures of those than for light bulbs.
Also of course a few cable ties and insulation tape. a small pair of pliers and a small adjustable wrench and a couple of screw drivers.
