Need help identifying this Willys and parts for restoration

[Ahmed]

Hi..I have just found this Willys which has a plate screwed in the dash board panel stating :
Make & Model 6-226
Mfr Serial : 31376
Delivery 6-57
Can someone enlighten me more about this vehicle ? I need parts too.

Thanks

[51 CJ3]

It should be a 1957 station wagon.