mounting depth question

[Lschevy 3]

I see a lot of people that's wanting to sell a pair of sundown x 10's. The thing is idk if I have enough mounting depth for them to fit in a wedge type enclosure for my truck. I know I have enough air space for them, but mounting depth is what kicking me in the a$$. How do you guys think they would work in a wedge style enclosure? Here are the dimensions of the area I have to play with...

Front height-10.5"

Rear height-8"

Depth-17.5"

Width-55"

[///M5 2,833]

Wedge, square, sphere whatever it doesn't matter.

As for depth, no way in hell you are multiple inches short.

[lithium 358]

if you cant figure it out with math/geometry may be drawing it with sketchup or a similar program would help you visualize it. 

[///M5 2,833]

This one is simple once you consider wood for both sides and excursion clearance. Short by a country mile.