There’s far more to doing a conversion than just changing orifices. Additionally, nobody here would know the orifice sizes unless they had the actual conversion kit in hand and was reading the numbers off the parts in it.
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Here’s a copy of the manual on that fryer:Â INSTALLATION AND OPERATING INSTRUCTIONS
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This manual has everything you need. The part number for the conversion kit. Guidance on who should be doing such a conversion. And…APW-Wyott’s phone number.
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I suggest that you give them a call in order to seek proper guidance on your endeavor. Doing a natural to LP conversion IS NOT DIY territory.