They would be 2.5" outlets.
Rwd setup has already been done on the engine. 1/4 of an alloy donut was welded on the stock J-pipe to point forward (and raised enough to pass by the charcol canister).
Andrew, you're still going to run a/c yeah? I think you are going to find it difficult to fit that cooler with a/c. I JUST had enough room with my new cooler, which is 15mm thinner than yours (just clears the receiver dryer).