sheel set up on ol' school toy

ok, since i have an old school toy and the rear tucks half the wheel, i have this off the wall idea for a wheel set up. i am thinking about running an 18" boyd wheel ie: turbine, ralleye, or fury in the front and a 16" boyd flat top wheel (solid billet) in the rear. kinda influenced by alot of the custom bikes you see with a big open wheel in the front and a smaller solid wheel in the rear. who thinks this would look cool? i think it would but i had a friend tell me it was the dummest idea he has ever heard.
also if there is anyone out there that is tricky with the photoshop, could you through this wheel set up on a pic of an 86 toyota b/ded? thanks.