I've seen this car several times, and it's really cool. Some other oddities to think about...
The heater core is now on the left, so the firewall has to be modified for the heater core and steering column. The heater cables would also all need to go to the opposite side of the interior, and a special heater box/duct needed to be fabricated. The heater hoses are now really weird. They traditionally go from the core to the back of the right cylinder head, and the other to the right side outlet of the timing cover. Now the one hose has to come from the LEFT side of the car, and get over to the RIGHT side of the engine compartment to attach to the timing cover.
The steering box is now on the right side instead of the left, but the power steering unit remains in the traditional location using standard Pontiac brackets. So the power steering hoses need to be very long, as they go ACROSS the intake/water pump area, then go down to the steering box.
The throttle cable needs to be longer, and now goes from the pedal (which is now way over on the right side of the interior) all the way around to back left side of the engine to activate the carb linkage.
The fuse panel had to be relocated to the right side, else the wire harnesses would all need to be revamped.
The power brake booster and master cylinder are now on the right side of the car. The master cylinder bleeder screws would now be facing the engine, and the power brake booster vacuum hose would now need to be longer, as the booster valve is now against the right side fender!
On a 4-speed car (this one is an automatic), I can't imagine what the clutch linkage would look like, as the clutch pedal would now be on the right side of the trans, while the trans linkage is on the left side.
This car doesn't have a/c, but could you image how cramped the a/c unit would be with the power brake booster and master cylinder on the same side of the engine?
Think about some other odd little things that need attention, least of which would be an entirely new dashboard (made of steel of course) with the approriate cutouts for the glovebox and steering column, now reversed! If this were a column shift car, the long transmission gears selector would hit the door, so they probably had to have a different column with a gearshift lever on the other side.
There are probably other things that were required to make this a right-hand drive car that I can't think of right now, but it's fun to think of all the minor details that would require some special engineering to make a Firebird a right-hand driver.
