iasca/db drag rule question

[mrwigglezdj]

well since im rebuilding my van, and ive got my hands on a welder,
i was wondering what i can and cant do that will fall within iasca and db drag's rules, im not worried one bit about the fart box part of the shows only bass boxing and the like.
i know my box will be behind the b pillar from floor to roof, but i was wondering if i could put in metal plates on my roof and back fill with foam (inside ribs and tack metal plates across them to make the roof more rigid)

[SplCompetitionsMike]

you have my #, just call me.

[CalusaCustomConcepts]

You can do anything you want to do behind the B-pillar including cut the floor, concrete, titanium, etc. But don't mess with the cab area in front of the B-pillar.

[Flex]

If all he's doing is bassrace and bassboxinx he can do what ever he wants...IE

Poles in floor to roof
concrete floor doors
concrete dash

sky is the limit buddy

If your not suppost to concrete the doors somebody better tell tommy

[mrwigglezdj]

lol well that opens the doors xD but i know i wont be building a house in the van so no concrete lol

[CalusaCustomConcepts]

The house of bass?