Suzuki
The boxes in the first picture are from model railroad, In the second picture there are many bits that are from the Doll House world, like the barrels, vice, tools, stove.
If you have a Hobby Lobby near, they have a doll house section there, all of the supplies they have are very cheap, and often if you look will be half off, there you are going to find all your manuals, many boxes, all very cheap and ready to be super detailed by you.
You could also check out Miniatures.com.
The doll house world suffers for most garage items, however I try to take notice to what I see when I walk into someone's garage and often find many things that are not very garage oriented, Christmas ornaments, baby toys etc.
If it is a Suzuki Dealer, while you are at miniatures.com you may want to also take a look at glass showcases and things they have that are cheap and fast.
Hope this helps, I do not see scale, so sorry about that, if it fits, it fits.
Good luck.