To over come the small brake and tail lights along with the poor backup lights I installed 4 inch LED combo stop/turn/tail and 4 inch 55watt floods. I went with the combo lights because I also wired a trailer tow plug with electric brakes at the same time. You could actually use a 4 inch red and a 4 inch amber if you wanted to keep the independent turn signals. Not a very good pic of the lights as it was supposed to show the tire chains but you get the idea.
1971 series 2a 88, series 3 trans, Fairey OD, owned since 1978.