yea 550 is really high:.

i had to replace mine before,&& its quiet simple. and you do have to drop the tank..

it doesnt take long. you just might get a bit dirty.lamo

a pic of a DA tank. the piece up top is what is under the seat. you need to disconect that.
then some plastic pieces covering the fuel hoses by the tank.
then disconnect all the fuel hoses.
then the two tank straps that hold on the tank. thas all.
and make sure theres no gas in it, b/c it can get heavy and unbalanced:.