i work with fibreglass and resins all day and considering building some custom sub enclosers for my trunk (97 grand am) once i get the enclosers build and fitted how do i attach them to the car so they dont move when i am driving? do i bolt them through the bottom of the trunk?

 

yup.. drill and bolt just make sure that you seal around the hole good so it doesnt rust

 

or bolt it to the X-brace in the back seat if you have one

 

thanks...both the back seats fold down but not after the install