The Chevy went through a body change in 1999 including an engine change size in the half ton trucks.The 5.7 was replaced with the 4.8 and 5.3.The 5.3 and 4.8 get better fuel mileage than the 5.7 engine.The 360 is a gas hog.The transmission in the Dodge holds up better.I repair more 4l60Es than Dodge transmissions,with the sunshells breaking.The 727 and 904 are bulletproof transmissions which do hold up