I build 1/25 scale and my grandkids say they are to small. They showed me a 1/18 scale 1957 Chevy Gasser and a 1941 Willys Gasser by Acme online. They looked pretty kewl. I have a few questions. Is Acme a good brand for diecast models, do these models need to be assembled or do the come pre assembled, and where is a good place to my 1/18 scale models so it doesn't brake the bank. Thanks for the help.