Just joined and spent last three hours reading all the great threads. 99% sure we are buying a 27RL. Question to anyone that might know; want second AC installed in bedrooom. Will be done at the dealers. Should I specify a low profile AC unit ? Concerned about overall height and certainly don't want AC ripped off going under a bridge. Also are the taillights/brake light fixtures LED ? Was on my list today when at dealers but completly forgot to look. Thanks everyone.