New to this site. Vehicle 2000 GMC SIERRA SLE 5.3 , 4 wheel drive , extended cab 6.6 ft bed. Magna flow muffler , bfg tires , line-x liner , Mobil 1 synthetic oil only. I pull a travel trailer 6,000 lbs and added gm towing mirrors and that was a great upgrade , highly recommend for trailer haulers. Adding an AEM BRUTE FORCE intake and ACCESS VANISH TONNEAU soon.