I currently have an 05 Grand Prix and if I want to put my system in the car I have to relocated the stock headunit in the trunk and still lose some features in the car. :(

Are there any hoops you have to jump through to put a whole system (H/U, dual amps, sub and front components) in the HHR?

BTW, what size speakers fit in the front doors?

TIA. :thumb:

we have dash kits, but no wiring harnesses. no hoops to jump through.

6.5 all the way around, front are comps with tweeter in a pillar, and the rear can also be comps with some minor work.

Here is what i have in my HHR so far (http://chevyhhr.net/forums/showthread.php?t=1408)

Here is what i have in my HHR so far (http://chevyhhr.net/forums/showthread.php?t=1408)

Very nice setup JD, does that amp get hot in there when you're pounding on it?

nope, ran it for over 1.5 hours with it being 80 degrees low humidity. didnt skip a beat. i got out and checked the temp and it was 2 degrees of its normal temp after the trip. no need to worry with it there. if it where to get to hot, under the rear seat it goes.