Pontiac never made a second-generation convertible Firebird.
However, there were more than a few aftermarket dealers that would do one for you.
The kit used to butcher your Trans Am was one of the cheaper ways to get a convertible Bird.
It is possible to salvage what you have, and if...
My 79 Trans Am came with the inflatable spare.
After getting my first flat tire, l found out that the factory-sized tires do not fit in the trunk.
For 79, the factory-raised the trunk floor for the bigger than 78 fuel tank.
The WS6 front coil springs will raise the front of the car.
The ride will be a little harsher.
In the late '70s, it was easy to pick out a WS6 Trans Am or Formula just by parking the cars side by side.
Going to the aftermarket you could replace all of the rubber bushings with...
1970 was the year Pontiac changed the mounting lugs on the engine blocks for the Firebirds.
1970 until the last of the 400s in 1979 had both mounting legs, so you could put a newer engine into a first-generation Firebird, but not a 1969 engine or older into a second-generation Firebird...
F41 suspension was for Chevrolet.
Which diameter rear sway bar do you have?
Some of the earlier years Trans Ams and Formulas came with some larger diameter rear sway bars.
You could talk on the phone with Energy Suspension or some other suspension companies for the correct bushings...
The sway bars and bushing would depend on if one of the cars was a WS6.
The 301 turbos and the Olds 403 would weigh pretty much the same.
The Olds engine is offset towards the right or passenger side by about an inch and a half.
So you'll need the Olds hood scoop.
The sway bars are...
I have been into Firebirds and especially Trans Ams since 1974.
In November of '78, I ordered a new Trans Am.
All of the 400 4 speeds were already sold.
So I ended up ordering a 301 4 speed WS 6 car. I still have that car.
I also have a '78 Y 84 Trans Am and the first Firebird I...