Quote Originally Posted by pj350 View Post
.. but how bout the motor beginning with nr instead of qr ....
The NT NASCO 308 replacement block/engine if it is documented (big if) in the vehicles history it may not effect the figure as much.
But it would hurt to a point. Engines don't seem to phase as many people as I suspect they expect engines to wear out or be modified or replaced.
Still, if you want matching numbers car the original engine number really matters. You want the numbers to match the sales invoice and owners manual/log books.

That's where the highest desirability and highest prices are at along with factory running gear specs, colours and rarity (With Panel Vans your also considering windowless side panels).