My very first car I bought as a freshman in HS was a 04L car.
It is just a 307, 3 speed manual car. Here is some information if it helps decipher what the L was for if not a mistake. I was lucky enough to buy it back after Katrina from a junk yard, and found the broadcast sheet on the tank . Car was a non RS car even though someone put an RS front end on the car after I sold it.
TTag
Broadcast
In Junkyard
It definitely was not performance related as this Camaro was as base as you got other than the V8 option, chrome trim and the passenger handle on the dash, 3 speed Saginaw on the floor with console.
Rich