I am looking at triking my 2005 Wing with a Trike Shop conversion. I can either get an extra gas tank or extra trunk space. One installer says it will ultimately be easier to sell a trike with the extra gas tank more than the trunk space. He goes so far to say he won't sell a conversion without the extra gas tank. I don't tend to be an "iron butter" so I'm leaning toward the extra trunk space. What do you guys think?