New 20 ounce tumblers available now! Forum donation credit with purchase. https://www.wildguzzi.com/Products/products.htm#Tumbler
I didn't see the ad made any claim as an 8 valve engine. It's clearly not.
The seller is probably a member here, wrote the first ad to see what anoraks would pop up then edited the listing after he stopped laughing.
$6200 lol