mhadac, to be honest the bolts went into this chrome waterneck slightly canted, and the only reason it didn't leak was because of ALOT of sealant. It may not have held under extreme duress, which is the way I normally drive. Would not even think of selling this due to that possibility. Its shiny junk on the shelf now, probably fits a small block Chevy or something just fine.
Subsequently found out the local NAPA dealer has the right one (chrome) right down the street, and I waited all that time for an Ebay seller to send it!