Never mind, I quit for the night and ended up taking the y pipe loose (three nuts on the passenger manifold, two bolts where driver's side connector pipe comes in, and the two bolts where it fits back to the cat. Had to take the O2 sensor out to fit one of these, good time to put in the new one), which I hadn't wanted to do, but I have some new exhaust gaskets and bolts that I needed anyways. Woo hoo.