I have had Borla on a viper and was very pleased with them. Quality, sound and fit were all 10s IMO. But, that was a viper. Being a person who buys a vehicle that is at least 4 years old so i can get it at HALF of what it cost new, i recommend you leave it completely stock unless this is the truck you want to keep until it rots out in your front yard 20 years from now. The vehicles that sell first and for the highest price are the well maintained, well cared for and completely STOCK. Why? An exhaust system, cold air intake or other bolt on are sure signs the vehicle had the tar beat out of it by an immature driver. I wont touch them with a 10 foot pole.
So unless this is THE truck for you, drive it, enjoy it, keep it in good condition and make your fluid changes on schedule and LEAVE IT ALONE if you want a good price when it is time to upgrade again in about 4 years, the average someone keeps a vehicle. Every penny you dump into it in "aftermarket upgrades" is a penny you will have to pay out again when it is time to sell. It is like saying, "hey, i want to spend *** bucks to make my car worth less because i want to be different.......just like EVERYONE else. Just my opinion.