why not just use angle iron screwed on to your box in the front and the back... then drill through the angle iron in 6 spots ( 3 front 3 rear) and mark the floor where the wall will sitdrill through the floor and nut and bolt through those holes

done... if ur not competing dont even worry about stuffing the sides of the box to seal... just nice trim panels... you can even skip the angle iron and use large washers and bolts and just drill through the bottom of the box... just make sure to measure before you drill so you dont hit the channel of the frame , gas tank or break or fuel lines or directly above the exaust system

hopefully that will solve anything you were unsure of

 

Say I do bolt my box down with angle iron. What do I do if I want to take the box out? Do I just leave the bolts in or do I leave gaping holes in the floor of my van? My biggest fear is securing a wall in, down the road wanting to take it out, and being left with a major malfunction such as holes in the floor.

 

it's called tar a day and it will dry hard and will prevent the hole from rusting out

 

Point well made. I am waiting on my new gear now, and once it comes I will make my final decision to wall or not. For ease of building the wall I was thinking of making 2 seperate boxes side by side, screwing and gluing them together so that it isn't just one big box but they are still connected, and having the ports up at the very top by the roof and the subs in the middle right behind the seats. Would that work alright (this is an all music setup).