I'm curious why do you prefer a *FM transmitter* edit. (i just looked at the picture and it's not a common FM transmitter, so the quality should be fine) to an auxiliary cable. People probably don't have it on a lancer because:
1. Some lancers are equipped with an auxiliary jack from the factory
2. If they aren't, it's easy to connect a cable to the back of the head unit.
Instructions.
Connecting a cable directly to the head unit is also very sleek versus a bunch of wires and antennas. I looked at the picture of the Tranzit and it looks like you will need to pull apart the dash to connect the antenna bypass to the back of the head-unit anyway.
