Not sure that I have ever seen a pump that is too tall for that area, there is a lot of room there. If your pump is too tall. mount it sideways, and electric pump doesn't care which way it is mounted. I would never put a pump in the trunk, first,it will be way too noisy as Steve mentions. Secondly, I have never seen a pump mounted in the trunk that looks good, it usually ends up by the shock tower and the hoses are right there as well, to me , that looks sloppy. Best place is under the car, the right side is where it should go, that's where your fuel lines go. It is fine antwgere there as long as it has some distance from the exhaust and doesn't hit an axle