I have built a sub box b4, 3 seperate ones for rf 12" subs. However my measurements won't help you any, as it is a very custom design.
Best bet is to:
A. decide whther you want a ported or sealed enclosure.
B. look up the recommended volume (litres) required for the sub in ported/ sealed form.
C.Down load the sub box calculator from
www.caraudioaustralia.com.au, (if they still have it- I downloaded it a couple of years ago so I'm not sure. Or you could come up with a rough design and rough sizes you would like, and use the old maths u learnt in school and never thought u would need and work out the volume and then adjust the sizes according until you come up with something desirable.
or you could just hope that someone has made a box for this particular sub, and is willing to post dimensions :unsure: