I'd suggest doing a search on the main board for K&N... from what I have read they are not worth the money nor the potential damage that they can do to your engine. Hope you find what you are looking for.
I have a K & N air filter on my 95 Tacoma but I put that on b/c every time I went to clean my air filter there would be oil in the air filter box. I had to take my truck in a few years ago for a gay re-call. They totally messed it up and my dad ended up blowing the motor on the way out the Toyota dealer parking lot. Sun Toyota SUCKS! That's in Tally. So, that is why I put that on. Anyway, I have the 3.4 V6 and it gives it a little bit of power and yeah it sounds cool but gas wise she guzzles. Works great for what i use it for.
The oils from the K&N filter will coat reed style MAFs tricking the ecu into thinking that more air is entering the motor than is really entering, thus the ecu adds more fuel. I will continue to use a quality toyota paper filter that I have used since day one in my Tundra and I have recently converted back to the efi air box in my Runner. The K&N filters are not the best for our Air flow meters.... also not the worst.