The most applicable section of the rules is here: Aftermarket parts designed and sold as direct replacements for stock genuine Porsche original
equipment parts with no change in performance or weight may be used and will be considered
“stock” for the purposes of these rules."
"change in performance" might be debated here, but I am going to make the call it's not material here, and your intent is durability alone. That said new hoses rarely are an issue.
Thanks for asking- wise to do in these areas!