92 SB Magnum in Early A

If it's a 5.2 any la 318 for cars will work. If it's a 5.9 any la 360 for cars pan will work and it must be for a cars or it will not work! New ones are available on line for as little as $60 so I would recommend going that route so you know that it'll have a warranty for any defects unlike a used one for about the same money. Good luck with your project.