I tried the black stripe from Autozone and the shifting was not normal. Much higher rpms to shift from 1st to 2nd and slightest touch of accelerator would cause downshift from 3rd to 2nd. at all speeds.

Called several parts stores, another Ford dealer, and finally a transmission shop and got different answers from all of them. Trans tech said black stripe is for diesels and heavy duty use. I have most faith in him - he said to get a green stripe but I thought I would check to be sure.

Rock Auto lists about 5 different colors all for 76 Bronco.

Exchanged the black stripe for the green this morning and installed it. Working perfectly just like the original.

Autozone part # MV209 or MV317 - green stripe $9.99.