Figured they used the same casting. I've heard of alot of failures with those aftermarket pistons and I'd rather stay away from their $1000 price tag as I'm sure most would. I don't like the hesitation of a turbo, I want the instant power. My Malibu isn't turbo but it has about the same hesitation and I hate it. When I build the GTP, I might go turbo though cause I'll be looking for top power. This car will have a M112 of sorts once the motor is running and broke in.