I need a blow down tube that i can easily more around and bend, basically I need to go down with it and then out an existing hole under the bottle. Can I just use normal bradied nitrous line with an attachment on the outside of the car to hold the end outside? Would this pass track inpection?

yes, nitrous line is strong enough.

I used hydraulic line, cheap and can handle the pressure.

Have you ever had it to the track, did it pass tech inspection? This is what I am mostly worried about.

I use a braided -8AN line. Screws directly onto the relief valve, and connects to a bulkhead fitting on the floor of the hatch. No reason it wouldn't pass tech.

We only have 1/8th mile airport drags,(been to 3 so far with it)

We are not as serious and I passed every time

The line won't see excessive pressures as it's open at one end.

I wasn't worried about the hose breaking, more of it being a very technical/picky at the track about it not being a solid tube so it doesn't flex.

Thanks guys