jkane,
The kit I'm looking at has a small blub socket in the reflector for a parking light. I intend on using that spot to put in a amber led bulb for the front turn signals. My headlight buckets and lenses will be the ones GMC bolted on the truck back in 1936. I will make up my own harness. Out back I'm planing on getting some repop 36 tail lights and wireing them to accept turn signals. I also have the option of some period accessory turn signal lights(the ones that look like cans with arrows on both ends) as I bought a milk crate full of them and old glass reflectors. I am unfamiliar with the stock 50 3100, but it should have a spot for parking lamps. Just upgrade the socket and use what ever tail lights make you happy with the look. There are many Wiring Kits out there if you are not comfortable DIY.
Jockbolter, When you are speaking of the low beams dipping, if you are using British spec lights, shouldn't they dip to the correct side of the road?