I was about to type "How do I front mount a 416-8A?" in the title of this post but changed my mind to avoid nasty responses

So, how do I mount a 416-8A on the front of the baffle if I have an existing cabs with no back access and has a driver hole on the front already cut to that of a 604 driver?

http://img201.imageshack.us/img201/7782/img0507t.jpg

Any suggestions?

Thanks,

Abe