Air box
Don't forget to cover the hole in the back. I used fiber glass. I had the motor out when I put my box in and it was still difficult then. I think it would be really hard installing with the motor in the car.
I also had to cut off the flange closest to the throttle so I could get my 3.5" silicon tubing to fit on the air box.
I installed a 996 3.4 motor in my 986 using the 987 air box but it was a really tight fit.
If I would have needed another 1/4" it would not have fit. If you want some pictures I can send them.
Good Luck
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