Hello I own a 2013 Chevy Spark LS. I was looking to replace my factory head unit with an aftermarket. I would like to retain the door chimes but don't care about the OnStar. I have been looking for wiring harnesses and I have come across two of them. I found the one everybody recommends on crutchfield.com that says it fits my car but comes with all the plastic trim pieces that i have already. But I also found one that fits a 2013 Chevy Sonic that does not come with the trim pieces on walmart.com. I keep searching online and every retailer selling this kit says it does not fit the spark but the