Triticum Agricolam

Heya, I notice you live in eastern wa and know how to design a box. I live in Leavenworth and could use some advice. I have plenty of experience with the actual construction but designing a 4th order is new to me. Any advice or help will be greatly appreciated. I will be using my old school system from the 90s. The subs are 2 orion dvc 12 inch 2ntense. They will be powered by a ppi pc 2100 and an audio control 2xs crossover. 

here is a link to their specs

https://oldschoolcaraudio.com.au/wp-content/uploads/2018/12/2ntsub.pdf

Here is a link to my first post about the install

https://www.stevemeadedesigns.com/board/topic/215947-my-old-school-gear-getting-ready-for-an-install/?tab=comments#comment-3234649