18x12&18x10 steel wheels?

[Dragun12]

This is a real shot in the dark and ive look every where i can think of but does any one make a 18x12 and 18x10 on a 5 by 5.50 lug steel wheel that doesnt cost an arm and a leg. Because my whole idea was to try get some wide tires under the truck to make it grab the corners and look nice and mean for less than with the whole suspension cost me. The tires idd like to put on my old tanker are BFGoodrich g-Force T/A Drag Radial 345/30r18's in the back and 295/35r18's in the front. Ya im alittle crazy but i'm also knowlege hungery too so if any one knows where i can find the unobtainable steel wheel that would be awsome.