There isn't much space back there... So I'm looking for some creative insperation.

 

Hmmm, how about an Alta exhaust or one-ball and mount the tank where the Secret Policeman's Other Ball would go? Takes NO space inside the car at all!

(you heard it here first)

 

bump

 

Dude. Mine's on the roof. My dentist refils it for me for free. Nice guy he is...

 

get a set of those mini tanks, and stick em under your front seats!

 

What's the carbon dioxide used for?

I've seen some slick mounts from Brey-Krause that attach to the seat tracks and mount the bottle in front of the seat. The bottle even moves back and forth with the seat when you adjust the seat.

Not a good place for a nitrous bottle, but an excellent place for a fire extinguisher.

Here's a thread with with pictures of the install and finished product.

 

it's NAWS!

CO2 is used to spray the intercooler

 

I'll leave the witty Fast and Furious comments for everyone else. If you want to mount without removing your seat, the boot is about the only location you have. you can fit about any size bottle you want there.