Installed the Fuel-it kit on the Bullitt yesterday with no problems. Connects and gives readout immediately. The fuel line coming out of the firewall is a little different on my car than the OP's. What worked best for me was to use a slide in fuel line disconnect tool to remove the line at the firewall. This allowed for taking that whole section of line out of the car for removing the factory rubber line and crimping on the new rubber line. There was no way to get access to ensure a good crimp with the line connected. Anyway, I'm pumped that I don't have to physically take a sample at every fill up now.