Converting Sideshot for Phone to Go Pro?

Is there a way to use my existing Sideshot phone mount to go pro mount? Can't afford to spend another $200+ so I'm wondering if I can convert what I already have. Am I missing a video somewhere that shows how to set that up or can't be done? Found a Hero 5 for cheap & watched Hajimoto vids but don't find any on converting the phone mount. Anyone know the exact length from sideshot prism hole to go pro lens? Man, if I had a 3D printer I'm pretty sure I could make one. It's not "rocket surgery".