hello, i live in UP of michigan just retired and now want to play in the woods with my 89 landcruiser but the gas tank was leaking at sending unit, pulled tank, replaced part&pump. question, whats with all the [5] extra hose's. book says they go to a fuel evaporative separator, problem is everything is so rusted & crumbling apart do i have to replace all this crap or can i just plug the holes and go play? thanks for any help