Modifications are important factor for diesel enthusiasts. The are many companies that offer aftermarket parts for diesel trucks. Probably the most common upgrades are either an aftermarket exhaust system or a programmer. Exhaust systems can increase the performance of your truck by increasing your horsepower and torque and it also changes the sound of your truck. The list of modifications goes on and on from upgrading the inter cooler to upgrading your torque converter. There are several websites you can go check out and see what they have to offer to upgrade the power and the look of your truck. There are several websites that sell modifications for your truck. On the next page I have listed a few for you.