Neither.
Doesn't come close to the ~$5,000-$5,500 for the Step 0 kit. Not really sure how it's the same, or more at all.
Crank - $1100 / Pistons - $1400 / Rods - $1100
$3600
Lets be realistic if we are comparing prices, the HKS kit is nowhere near the same price. Its over 35% more expensive.
Not talking "mates mate rates here either". I'm talking what you can get it from right now over the next from RHDJpn/Greenline etc.