my truck is leveled out with cranked t-bars and 1.5 blocks in rear. now i want wheels. i really like the xd monsters in black. i'm thinking about 18s or 20s but i dont know what will work or look the best. 18s with 4.5 backspacing is what i was really thinking about but i think the 20s will also look good. what yall think? and will they fit?