I am installing a boost guage at the moment and need a place to get through the firewall close to where I sit. I only have 6 feet of tubing, so I need to make it through relatively close to the pedals. I don't really want to drill but if I have to, I need to know a good place to drill without encountering subframe or wires. I went underneath and couldn't see anything and I pulled the carpet back and looked where my feet go, but no luck. Is there somewhere I am missing?