Well I was BSR stage 1 tune so that's more pressure.
I'll look at lunch today and see what size I bought and post back. It worked fine 95% of the time, but the 2 times the outlet hose blew off it was a total PITA. After the 2nd time I put the stock intercooler back in.
This summer I will try and find a more secure, ribbed type connection.
Will's probably works great for him, I'm just recommending you go a little wider than the one I bought. I'll post back.
EDIT: Okay I found my receipt and the one I bought was 28"x9"x2.75". FOR MY CAR, an extra 1-2" in end-to-end length would have been better. If you move the AC condenser back a spot to where the stock intercooler resides, then there is plenty of room for a 3" deep core. The brand on mine is CXRacing and I am happy with the quality.