Hello everyone I'm back. Okay im looking to do some mods but cant find any help on what exactly to do. So here it goes. First off the truck is a 05 Frontier Crew cab 4.0 v6 with 209k. The first question is what would be a good choice for muffler replacment? The second is how do i swap from clutch fan to electric? The third being how does replacing factory cats front and rear with high flows affect how the truck runs? Just to add im not really looking for super performance just better running overall. Im getting a cold air and wanna do the fans for sure. My trucks runs about 1k idling thanks to clean throttle body which is also on my list to replace. Any adive?