I have a 2004 discovery 2, and I've been wanting to install a snorkel. My factory airbox is broken, so I've run a cone for a couple of years now. Does anyone know if a discovery 1 arb style snorkel would fit ? I already have an in line filter, and the d1 snorkel has a round port, instead of the oblong port on the d2 snorkel. I'm working with limited funds, so a mantec is out of the question.