Originally yellow, this one was ordered with some nice options including AM/FM and 8-track, wood wheel, rally gauges, etc. Sounds like the trans isn't original, but the engine and rear are. It's reassuring to see the current owner has had this one since 2000....
Sold new in the Milwaukee, WI zone, but I can't identify the name corresponding to the specific dealer code.
Link to 1968 Firebird 400 Convertible auction
223678U113315