Summit had free shipping, so I went ahead and ordered it last night, along with a reducing adapter to connect its 4in inlet to my 3.5in intake tubing I have.
Its 2.5in tall, and I have 3 1/4 to 3.5in clearance, so it should clear just fine. I'm gonna make my own adapter out of some extra steel plate I have laying around. Shouldnt be too hard.