[marxjunk]

Originally Posted by Brewster

Found this inside the rear seat and not sure what it is or from where? Original to the car but ???

ive had a dozen of these sheets...its a cheat sheet for interior options....in your hands it looks like cash register receipt paper..ive even posted pics of a couple in the past.....all ive had came out of the drivers bucket seat

m40 is 400 turbo etc..its pretty easy to decode them

[Keith Seymore]

Originally Posted by Brewster

I have no resources to i.d. codes thus lost. Any help is appreciated.

Not lost; The codes are the same as any other contemporaneous GM model line, which are (mostly) the same as in use today:

A39 = Deluxe front and rear seat belts
A51 = Seat, front bucket
A85 = Deluxe front seat shoulder harness
C06 = Convertible top, electric
D33 = Remote outside rearview mirror
MX0 = Merchandised RPO, auto transmission (for the non merchandised code M40)
U80 = rear speaker

Example:
https://www.gmheritagecenter.com/doc...let-Impala.pdf

Generic RPO de-code (not as accurate since some codes get reused - especially powertrain codes)
http://www.rpocodes.com/GM-RPO-codes...AthroughF.html

[nmoreilly]

Originally Posted by johnta1

Can you post your build sheet?

The Billing History Card (BHC) is what usually had a place for the EUN.
(1968 last year?)

Most build sheets I have seen, didn't have a place for it?
(had a place for engine code)

Thanks for all the VERY useful content on your website. Has been a huge help to me over the years

[Brewster]

Keith, great and thanks for sharing.

[69 RA GTO]

Originally Posted by Brewster

Found this inside the rear seat and not sure what it is or from where? Original to the car but ???

Brewster, I have the same sheet of paperwork that I pulled out of a Crystal GTO from Arlington plant. Get a hold of me and I can send you a picture of it if you would like