Value with / without SPID on glovebox door

[71CHEVYSHORTBED402]

Originally Posted by davepl

Why is a SPID a big value hit when you can get a new SPID printed up on the original chain printer on original forms saying anything you want?

I think about the rarest thing we can establish is a big block with AC, because we can do it through stamped numbers. If it's an option that can only be established by SPID, and if SPID is easily duplicated, how do you authenticate anything?

In my case I'm claiming it's a Sierra Grande, but it could be fake. But I have pictures of it being a Sierra Grande on the delivery day to the original owner in 1970. But I could have hired an old guy and used an old 110 camera.

Without things like stampings and crosshatches to verify the stampings, it's hard to verify anything.

I just went through documenting and confirming a car I bought is a one-of-one super rarity, but everything matched. Alternator, distributor, (water pump had been repalced), trans, axle, and so on. Since they all matched each other, it was either real or an amazing amount of work.

I got a new SPID to match the old one, simply because the old one was a bit worn. Some of the best advice I got was to tuck away the old glove box door and SPID, and slap the new SPID on a different door. It just adds to the authenticity. The SPID(s) won't match the truck, because I lost the camper mirrors and step bumper, and I'm adding all the moldings with a deluxe paint job. But at least it can be verified what it was and what was changed.

SPID is one thing, a build sheet even better because it shows everything. If you have both and year/truck correct this and that's, then there are no secrets.