You can try it, for certain.
Now for the however: (sorry, but it's real) What you suggest likely will not work.
Speaker drivers have parameters that predicate their usage. Those designed for in-wall usage are optimized, along with the crossover, for an infinite baffle, and will have different compliance requirments than those used in a box. When putting speakers into a box, you have to take much more into consideration. The Fs and Vas of the driver, as well as the drivers Q all play important roles in matching a box to the drivers. Getting the Vb (box volume) right is one problem, designing for a ported enclosure and getting volume and port tuning to come together is another.
After getting a box optimized for the drivers, you then have to redesign the XO for the new baffle size, and also account for the BSC (Baffle Step Compensation).
This is a very light scratching of the surface.
In every previous thread where something like this has come up, I always encourage the inquisitive to learn about what actually goes into Speaker Design. It is not a plug and play hobby.
The more friendly two books for introduction are the Murphy and Weems books:
Buy Introduction to Loudspeaker Design: Second Edition: Read Books Reviews - Amazon.com
www.amazon.com
Designing, Building, and Testing Your Own Speaker System with Projects [Weems, David] on Amazon.com. *FREE* shipping on qualifying offers. Designing, Building, and Testing Your Own Speaker System with Projects
www.amazon.com
After those, the more advanced books by Alden and Dickason:
Speaker Building 201 [Ray Alden] on Amazon.com. *FREE* shipping on qualifying offers. Speaker Building 201
www.amazon.com
Loudspeaker Design Cookbook [Dickason, Vance] on Amazon.com. *FREE* shipping on qualifying offers. Loudspeaker Design Cookbook
www.amazon.com
I am working my way through learning the SoundEasy Software right now and have read those books several times each. Even still, there is a lot more to learn about doing it well. I feel it is a worthy pursuit!
I hope you will take some time to learn about it, first.
Cheers.