the tyre place in the middle of oranmore, byrnes tyres, oppsite fahy's had a nice set of 18" merc ML alloys, not as nice as the AMG's but could be bought cheap, he was talking 200-250 2 years ago when i looked at them last, i was up there about a month ago and he still had them. call in and put them on the car and then see how they look.
BTW congrats, savage machine!