I just got one installed in my truck, man these things are sweet. In a vette it would be ten times better but I have a SR7 plus installed in my '02 Explorer Limited. This thing is amazing, it's like having a forcefield for law enforcement. In my area all the cops have radar guns secured on their rear windows and as far as I know in the front. Well I can detect them from a mile away or more easily. Even in hilly, wide open country this thing will find 'em. I haven't had to shift a laser yet, but I'm practicing the timing just in case. I think it's a good investment and reassurance for when you wanna open it up a little and make better time. Just thought I'd let people know how sweet these things are. They could definitely save you money in the long run.