I viewed that same item and have emailed the seller questioning if it is for a master or std and he replied he has both,. I am waiting to see if there are ANY numbers on the parts to identify them. The red flags are already up as he listed only as for a 36 Chevrolet - said he has both std and master . At least it's an Ebay listing so there is a process in place if not correct to get a refund even though the ad says no returns.