If someone can help with decoding this project, I would feel a little more comfortable displaying it on our site.
I have had a ton of Chevy "GuRu's" look at it and say it is a true "SS" and others just a chevelle with another BigBlock dropped in the saddle.
Its on our site ( http://www.azclassics.com/vehicles.php?/907 ) The full Vin # is on there.
If you can at least tell me if the Big block motor could have been ordered under that ID #.
Thanks in advance for the advice,
Jason

Looks to have lead a hard life... Who knows what all has been changed along the way. There is plenty not stock there.
Does the engine block ID match the VIN? Transmission?
What rear axle and arms?
134 series is the 300 Deluxe model. Z25 (SS equip) was available as an option.
Z is the Fremont CA plant.
What is on the trim bar above the glovebox?
Look for a build sheet above the gas tank, under the seats, behind door panel, etc.
BTW: what is the data on the cowl tag? What dash instrument set does it have?
Tell us what you find out.

Dan