kirban 2 cents worth
While on the subject....
The one group of owners where every number must match and has probably set the bar so high is the Corvette group.....they can even tell you if the wheel weights on your rims came form the factory. They have even gone so fas as to register or trademark the word survivor....if you notice when that word is used related to cars it has a r in a circle usually.
Over the years this mentality has trickled down to other performance cars notably A body cars Buick GTOs etc...one reason we did original date coded packard plug wires about 15 years ago.
Every car manufacturer as far as I know puts the vin somewhere on the frame. I recall years ago that the cops have some sort of book probably on computer now that shows them where the vin is located in every year every model car/truck etc.
I agree on a turbo buick I would not be that concerned. I do know whenever I would buy a GNX I made sure the block number matched the VIN number.
just a few related thoughts...
kirban
Trickle down is an understatment to say the least.
You can take almost any collector car, all things being equal,the numbers matching will out sell a car that does not match numbers correctly virtually every single time, HANDS DOWN
Dont believe it, check out a 69 numbers matching Z28, or 70 BOSS 302, or 70HEMI CUDA , or on and on and on vs a non matching numbers car.
It can become insane trying to take an old car and match numbers correctly.
The thing with the numbers matching etc yada yada yada is over the years
engines are replaced, transmissions are replaced etc etc.
Theres the value of the original !
With that said, In my opinion the GNs have not reached true collector status
and in fact may never.
If they ever do, it will matter if its the correct engine, trans etc.
Wheel weights, bumper stamp numbers maybe not so much, eng. block, trans, rear end will seperate the original from the clones.
My view only
Steve