I'm sure it's not legal, but who gives a rip. lol. I've seen this set up in a couple cars in MM&FF and 5.0 Mustang. Plus everything is right there, and I'm not running 20 feet of $8/ft -AN line. It's a good cell, a JAZ... so I figure it's pretty safe there if it gets hit. Also... Chris Little with the Green Notch in Drag Radial in NMRA runs his take fitted into the front support/reinforcment. He drives it on the street. Also, I live in Florida... No one checks for emissions or that crap. So I think I'm good to go...