Alright, I have a 03 tahoe without hydraboost and wanted to upgrade to 07 and up 13 inch rotors, the truck just doesn't stop like my NNBS silverado. I found some GM calipers with the bracket that's a direct bolt on (part#19176793 & 19176794) and was planing on running the powerstop K2069 kit that includes both rotors and pads, but my question is will this improve braking power even though I don't have hydraboost? And if it doesn't any suggestions without spending $1500-up on a big brake kit? Also the truck has 164k miles, would flushing the brake fluid help any, I've herd ppl say it will and some say it won't? Thanks!