I want to build a fiberglass box in the spare tire are and make it flush with the floor in the trunk. Does anyone know how many cubic feet the spare tire area is.

 

if u do like i did its about 2 1/2 ft but i didnt use the jack area take a look at my thread custom box and amp rack done

 

He is correct, the spare tire area is 2.5 cubic feet if you only use the deep part of the tub in your trunk, the small indentation toward the back seat is another .3 cubic feet of space to use if you need to!!!

Be sure and Dynamat the hell out of your trunk if you glass that down there, it will shake the whole car!!! LOL