I think you might find its a Falcon 500 with a few options.
Having said that, this has been a point of discussion amongst some other car enthusiasts recently. I am in the process of restoring an old Mercedes and the question is often asked of me at what point do I deviate from the original specs.? At that point I usually suggest a Holden V8 would go well in it.
There is a movement amongst the classic vehicle community who place more emphasis on the patina of a vehicle.
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My Mercedes has the worn out carpet replaced with a piece of berber carpet ripped from someone's living room probably. I want to replace it but there are a few people who think I should preserve the vehicles patina.
On the other hand, there are people who believe if they repaint the fading, crappy original paint, they are detracting from the originality of the car.
And, of course, there are those who polish their head studs.
Who's right, they all are. I just love appreciating the labours of their love.

