[Teds89IROC]

I've done mine (iroc and thunderbird) myself, not hard at all when you have the harness like the rest have said. If you're going to have them do it; I would suggest taking off the trim panel ahead of time so all that's left for them to touch are the 4 7mm bolts holding the actual head unit to the car. That trim panel should be the only thing they might phuck up.