Wichita is one big show. 7 to 7 Friday, 7 to 5 Saturday. $3 parking this year, no admission charge, though. I usually spend 5 hours there Friday afternoon, sometimes go back Saturday. You can usually get something for about any vehicle there. Dress warm, some of the vendors are outside if everything isn't coated with ice. Three pavillions, the big one (front) is mostly parts, middle is vehicles for the auction, back is parts and tools.
http://www.wichitaas.com