I installed the EVO intake last night. Wow, was that an ordeal! It was the hardest easy job I've ever done! I think the install time rounded out to about 5 hours.
Taking everything out was a nightmare. The stock Airbox was a PITA. I ended up having to cut it out. But when it came to putting everything back together, the job went rather smoothly and have no problems once everything was back in place. The sound is nice and alot smother through the revs. All and all it was worth it. But seriously, an intake should not require this: