HO slot car grandstands, and such, where to buy???

Hi Y'all,

I have a nice 4 lane HO slot car setup thats permanent mounted on a foldaway platform. What it lacks is the typical stuff you find at a road race track.

Grandstands, spotters tower, consession stands, portapottys etc. I can easily get plastic scale people. But am having a hard time finding the buildings n stuff. Id like them to be realistic looking, and not look like cheap plastic pieces.

Can anybody on here help.

Thanks
Matt