Ported box design for 12" GCON...opinions?

[handman84 60]

Finally designed my first enclosure. It is for a 12" GCON. ~2.5 ft^3 tuned to ~33hz. Does my math/design look correct? Does this look like a design that will translate into the real world effectively? It will be going in the trunk of a 1996 Honda Accord sedan powered by an AQ1200. This is what I came up with to fit my trunk space needs. Any critiques and opinions are welcome and greatly appreciated.

[mikebingham34 7]

add 45's, and try to move the sub more toward the port, it shouldnt unload as is, but i would just to be safe

[pro-rabbit 64]

I didn't check the math..

But I would add 45s and round over the port edges. Also, moving the sub closer to the port opening would be more ideal if you can.

[handman84 60]

Closer to the opening in the front of the box? So to the left if you are looking at the front of it?

[handman84 60]

And I want to add the 45's but how much area will that take up? How much do I need to add to the overall size of the box to maintain 2.5 Ft^3? How would I go about making those calculations?