Hi Junior,
One of the best places other then Thingverse for me anyway is 3DWarehouse for Google sketch models.
Heaps and Heaps of models but they will need some work converting them to proper models for 3D printing.
Here are just a few items that came up for headers.

Keep in mind that not prints need to be done as one piece, they can easily be broken down into model kit form.
Also, If you can send me a few pics with measurements, I'm happy to 3D model it, test print and send you the file.
Cheers
NimROD