RepRap and its derivative are all open source, so you are free to modify and add to the design in any way you like.
May I suggest though, that you start out building a regular Prusa V2 as your first printer, before you start experimenting. It's so much easier to build a custom printer when you have a working printer available to make the parts, plus you're going to need the experience you get from the first printer build.
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-Nudel
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