Since I'm panning on adding boost, I'm curious as to how strong the bottom end is on the S550 Coyote? I hear that the rods are forged but the pistons are not. I've seen numbers of "safe HP applications WAY across the board". These numbers range from 450 RWHP up to 750 RWHP. I guess driving habits may also play a key role in this as well. I won't be running slicks until I can afford to build the drivetrain. I really want that stage II Pro Charger kit offered by Evolution performance as it comes with the ID1000 injectors some fancy fuel pump booster, Red Race Bypass valve, and you can upgrade from a P1 to a D1 for 230 simoleons. Sorry @84Ttop I know you like Vortec =( I gotta be different! I'm pretty much in love with this kit as it leaves room to grow in the future when I decide to drop a built motor in her.