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Thanks. I ordered it from the Tunedparts vendor on my.IS. The vented version is what I "should" have gotten, because they will allow more air into the air scoop, but I didn't like the way it looks. I ran some IAT (Intake Air Temperature) tests using my OBD2 scanner. According to my tests, IAT's only increased by 2°F (no rad panel vs. non-vented rad panel). The small difference is probably due to the fact that I can still see the air scoop between the hood and grill. Since I have an SRI, I don't think it made a significant difference...at least nothing I can feel. Probably a lot more info than you wanted, but I thought I'd let you know anyway.
I'd post a link, but I don't know if that's against forum rules.