Here's a pic of my install. Mounts like a Scotty2 air filter into the firewall. Its got alot on turbo singing. I thought my wife wouldn't like it, but too my suprise she doesn't mind it at all. As far as exhaust temp go I really haven't seen any difference between BHAF & S&B. I bought the S&B off my son's co-worker for 1/2 price. I think I would stay with the BHAF with the Outwears Pre filter. But I suggest if you want lots of turbo singing just drill a 4 inch hole in the firewall. Plus you'll get some more fresh & cooler air in there. I also haven't upgraded to a bigger exhaust yet, so that might make a difference.
Hope that helps. Gary