I understand the requirements. I'm ready to generate an "Equivalent & Substitute Parts" engineering reference page based on the parameters you provide.

However, I notice that in your input, the [Substitute Part List] shows "Direct null" — meaning there are no substitute parts provided for the main part number 170M3813.

Before I proceed, I need clarification:

1. Should I generate the page with sections 1-4 (overview, parameters, substitution logic, and selection recommendations) but leave the comparison table and FAQ empty since there are no substitutes?

2. Or do you want me to wait for you to provide actual substitute part numbers and their specifications?

Please confirm how you'd like me to proceed with this null substitute scenario.