They are quite bulky parts, so if you got space to store them, then keep it. If not, then get rid of.
You can seep them now and if in future you decide to put it back to oem for any reason, you could always buy oem stuff back for same price or even cheaper, as it will be a bit older by then. Especially if it's being wrapped, it's gonna be different colour, so you have to either remove wrap or wrap oem bits.