SR20 lightweight flywheels

[Matej]

Hello gentlemen,
Currently being in the market for a new flywheel, I am looking at a few options.
However, one of the things I noticed is that many of the flyweels do not come with the dowel pins for aligning the pressure plate. What is up with that?




Is it on purpose? Or do they come included, but have to pressed in? I am curious.
I would prefer my flywheel to come with the dowel pins in it, to be honest.

For example, the ACT flywheel has them.




Are there any brands I should shy away from?

I specifically want a steel one-piece unit, as I do not trust aluminum and multi-piece flywheels.
Cheers.