I know the motor is going to make more power and rev faster (everything in the bottom end is forged, eagle h-beam rod and eagle crank with their ESP armor on both) with the pistons being forged aluminum with total seal gapless piston rings (i think the rings are 1/16, 1/16, 3/16) and go with a crank scraper (up and down stroke), Milodon road race oil pan, stud girdle, and of course a complete roller setup (1.5 ratio arms).