What Box ?

I have used the Orange box on all my cars and haven't had any problems. On some of them I just bolted it to the firewall or the fenderwell, but on the Hemi Coronet R/T and the Hemi Charger R/T I hid them so the engine compartment would look more original.
I thought about hiding it but was afraid of that gunk leaking under my dash.
I would like to hide it though. Did you just hang it on the fire wall inside the cars ?