I'm worried it won't fit

I am going to do my audio install this weekend and for my sub I have a Dayton RSS265HF-4 that I will be using. I planned on building a box and removing either the driver or passenger side plastic bin in the back. I have been looking at sub box dimensions and discussion from threads on here to get an idea of the max depth dimension and I felt ok but now that I have been laying the box and sub out in CAD I am getting nervous the sub is too big.

Most boxes I have seen show the bottom of the box being 7-1/4" to 7-1/2" deep. Modeling that on Pro-E the very top of the Dayton sub seems like it will be too far forward and hit the seat.

The "overall depth" as quoted on the Dayton spec page is 5-3/8" with the distance from the mounting face of the flange to the bottom of magnet being 5". From what I read that should fit but I'm second guessing how close it will be.

I really would like to use this sub because A. I have it and wouldn't need to buy another, B. because from everything I read it's a very good sub for music.

Does anybody have a sub the same depth(or deeper) behind the seat? I feel like I have read some folks that do but I cannot seem to find the threads now. I am thinking I am going passenger side so I can make the box wider and get close to 1 cu ft box.

Here is the spec sheet physical dimensions from Dayton.

 

The more I research the more I realize it will be too close and too much work to make it fit. So I made an executive budget decision and bought a RF P3 shallow mount. I'll use the Dayton for it's original intention, sub for my living room music.

 

"I'm worried it won't fit"

That's what she said!

 

You could fit this sub, but it will be very tight.