When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Always found the shims on top of the spacer. One good rule when restoring a Corvette or any other car. Is if it appears to be the original part never played with do what the car tells you not a book. The assembly line employee would deviate from the assembly manual when installing an item that made it faster and easier to install. As long as it had no other factor when installed.