That's a good place to mount it, for sure, but on my Mustang I wanted a cleaner factory type look. So I mounted mine inside the car, directly to the bottom of the heater core box, upside down. It doesn't intrude on passenger leg room, I can run the wires out the AC/heater firewall grommet so I didn't have to drill any holes, and the stock MSD wires were just long enough to reach the coil and distributor. Worked out pretty well for me, looks clean and no issues with it getting hot since it's cooler inside than the engine compartment. Plus the fresh air vent is right there to blow cooler air over it on hotter days.