Subwoofer Box deminsions Help

I recently purchased 2 10" subwoofers and am gonna build the box myself.

 Could someone please tell me the the best size box for these subwoofers?

 PoikAudio GXR104

Freq. Response-29-400Hz

Peak Power Handling-365w

Continous Power Handling-165w

I dont even know if I gave you the right info or not but let me know and I can put it in

I would also like to know how far apart to put the speakers from each other and how far from the top and bottom

I am going to put both of them in the same box of course and it will be enclosed.They will be going in the trunk of a 85 Tbird

Any info will be appreciated

 Thanks

Might wanna check out these links for more info about building your own enclosures.

http://www.eatel.net/~amptech/syndicate/spboxnew2syndicate.htm

http://www.installer.com/tech/box.html

http://www.polkaudio.com/car/toolbox/subboxplans/index.php

Polk's manual for these subs recommends for each subwoofer, a sealed enclosure with 0.65 to 1.0 cu. ft. of internal volume.  Also be sure to check out the12volt's  own subwoofer enclosure section. 

A sealed enclosure of 1.0 cu/ft per sub will give you optimal sound. If your going to build the enclosure your self I would build a 2 cu/ft enclosure, and put a divider down the center so each sub has its own camber with a volume of around 1.0 cu/ft. you can use the 12volts volume calculator to calculate the size of your enclosure https://www.the12volt.com/caraudio/boxcalcs.asp#rec Also be sure to use at least 5/8 or larger MDF board when fabricating the enclosure