For some reason there will always be some part on your car that is no longer available even if your car was made for 30+ years, especially if your car is 40 years old. In my case I needed a fuel filler neck bezel for a 73 Jeep Wagoneer. Without the bezel there is nowhere for the gas cap to mount. Although you probably wont need this exact part the creation process works for any simple parts you need for your car.
By the way,
"I made it at TechShop"