Mighty Max Aftermarket Wheel upgrade

Hey guys whats up? Im new to the forum, but have had my Mighty Max for awhile now. Its a 93 green Mighty Max. Im starting to get some better work hours and want to buy a set of aftermarket wheels for it and and confused on what I need to do to get a nice set of wheel. I guess I need adapters because most wheel don't fit it. If anyone could help, and if there is any sites out there where I could look for wheels on that would be awesome!! Not looking to go huge with the wheels right away, maybe 17-18 inch wheels, and I might just get a lowering kit

tirerack.com

Tire rack sell nice 5 star wheels that will fit my might max? One site I havent looked so far. Thanks for the tip