SLP 2 1/2" y pipe with Lt's?
2.5" Y but it's made to fit to manifolds/OE cats combo
and would not matge to any long tube headers out there.
Whether there's another 2.5" Y from SLP, I don't know
but have never seen.
And all that said, the SLP 2.5" Y hangs pretty low.
Almost as bad as the Jet-Hot Y I had, when the long tube
setup was on there. It's more about the overall geometry
than the tube diameter (which would account for only
0.5" after all). A bit of strategic dimpling might get you
what you need, on a 3" pipe - the close passes are at
the underbody sheet metal bosses for the most part,
and a little dimple here and there amounts to nothing in
the big picture. But the hammer work is on you.

