How can I tell if a Shelby is numbers matching?

Yes, the engine and/or the block and the transmission have serial numbers. I don't think you will find a list online, because it will encourage the less scruplous to commit dirty deeds.

I really really recommend you get some professional assistance.

There are several articles on my website to help you out.

http://www.thecoralsnake.com/Buying

http://www.thecoralsnake.com/Price.HTML

Matching numbers means the car is original in every respect. If you are looking for an investment grade, quality car, this should be your goal. If you simply want a car to drive around, this may not be as important to you. To determine if a car is matching numbers you will need to study the car you intend to buy. A basic understanding of FORD part numbers, unique parts and codes are all important. If you don't know these things, you will need to find someone who does. I will not go into detail about decoding cars. In the case of the 1968 Shelby, make sure windshield tag, the build tag, the warranty plate and the Shelby VIN plate all match. Additionally, these should match the title of the car. Some of these tags have codes on them and you will need to make sure the codes match the current configuration of the car. If possible, you will want to make sure the front, inner fender apron stampings also match. IMPORTANT: No one can guarantee you a car has matching numbers. Determining if the original tags came on a specific unibody is difficult. Once a vehicle has been restored or repaired this may be virtually impossible. For this reason, you should have a basic understanding of sheet metal repair techniques. Buying an expensive collector car is not easy.

The price guide will be updated in a couple weeks, don't look for any big changes. Prices are steady and falling on some models. You can always email directly and I will help you with a specific car (no charge). I know of several cars currently for sale as well.

 

But, is there a VIN derivative stamp anywhere on the engine block?

 

Yes, the engine and/or the block and the transmission have serial numbers. I don't think you will find a list online, because it will encourage the less scruplous to commit dirty deeds.

 

OK, speaking as a former '68 1/2 CJ owner, here is what I know:
http://www.428cobrajet.org/id-block.html