To do it correctly you have to cut out your tail panel and put the '77-'78 tail panel in. As you've probably found out, the bolt patterns and depth of the bolts are different between the two years.
You don't, it's blasphemy...
Grille only....no. Complete front fascia....yes.
You can find a power window wiring diagram for your 1977 through 1979 Pontiac Trans Am in Pontiac service manuals. The service manuals can be found at most local libraries.
10
For some cars, not for others
The front fascias will interchange. The rear ends won't.
The taillight of a 1979 Firebird is different from that of a 1979 Trans Am because several different models were made that year. This was to present the complete overhaul to the Trans Am that the company did that year.
Tachometer Filter Tach Wire Plug Connector ON A 1979 TRANS AM
Yes, a 1979 Firebird tail light will fit a 1979 Trans Am. There are also restoration services if you have the tail lights and they just need to be repaired.
JK Narva Trans was created in 1979.
Trans Am
turbo trans am came out in 81