fuel cell in engine compartment

Whos running one. Any tracks hassle you over it.
Im thinking im going to run a small one in the engine compartment.

I do. I had a buddy make it. Never even a second glance at it. Its within the rules so no issues.

Thank you I just got a small one from summit I was thinking it would be ok probaly going to mount on my front engine plate because its small enough and just vent out the bottom of the engine compartment.