Yes and no. The modular motors are very different than the regular push rod motors. Over head cams, cam position sensors, tight tolerances, cam tensioners and so on and so on.

The push rod motors are designed simply and are much easier to tear down and rebuild. Depending on what you are building you could save 2-4k in labor. You would still need to get it tuned.

I don't have the time,tools or experience to build my motor.

 

It's getting much better. Luckily my wife is more than understanding.