Wilderness Trail Bikes front end (bars/stem/shift pods/cable hanger). Stem is called a "LD". More than likely made by Steve Potts BITD. Do a quick searh for what the LD stands for. It will make you laugh...
I didn't find mine as a set. It actually took months of searching. A bit of luck. Good friends willing to sell their secret stash, and the decision to defer paying for my sons college education for at least a decade to get all the pieces together.
The LD was the hardest part to find. I would highly recommend a Nitto Dirt Drop stem if you are not specific to the LD. You will save yourself time and money. I have a Nitto DD on another bike and it looks, works great and is era correct. The shift pods were pretty tough to find also.