From 155 to 181hp. If someone has a better copy of this, please post it. I stole this from FB, so it's quite compressed. Soo, I'm assuming this swaps right into a cheaper first year ND I wonder if the redesigned head bolts right on or even just the intake manifold/throttle body? If the old, lighter, single mass flywheel bolts right up to replace the heavier dual mass flywheel? This is how you build an aftermarket, Mazda~