I originally had the 15" rims off the 4 cylinder tacoma. Didnt like the offset so I bought steelies from JEGS. 15x7, 5x4.5 bolt, 4" rear spacing, 0mm offset.
Buying wheels is easy since its the same size as the 4 cylinder tacoma, easy to search that way. 215/70R-15. Can usually get them for $80 each.