how do i go about getting the original build sheet for my 78 f-150

 

In about 10 seconds I found about 47 threads with build sheet in the title.

Here is the main one:

https://www.ford-trucks.com/forums/s...ad.php?t=39342

 

I just found mine under the seat cushion on the springs, that is where LxMan1 says they are usually found. But they also find them on top of the headliner too. Under the floor mat too. Of course you can't read the thing because it is usually in worse shape than the truck.