Box Design Help

[slipknot1joey 0]

Curious if anyone wanted to help me out by designing me a box for my 2 18" bl's. i want to build it myself for the experience, but dont trust myself designing a box. Obviously new 2 this, if interested i can give u max dimensions and other info for my 98 tahoe. Im plannin ahead and not ready to build box yet, but just would like to find some1 to help me out. Thnx for the responses.