Matching Numbers Car??

[JRI5906]

I am in the market to purchase a GN. How do I determine if a GN has a matching numbers drive train? Primarily for a 1987 model.

Also, how do I identify the original "109" block? New to buicks, came from a Chevy.

Thanks for the help! :hail:

[kenmosher]

Read up on the RPOs, buyer's guide, etc.

http://www.gnttype.org/general/vin.html

http://www.gnttype.org/numbers/rpo.html

http://www.gnttype.org/general/buyguide.html

Blocks:

http://www.gnttype.org/techarea/pictureguides/blocks/blockguide.html

More Technical Info:

http://www.gnttype.org/techarea/techpage.html

(use the drop downs on the top of the page)