need help with motor mount brackets

Ive got a 71 valiant with a small block k member out of a 73 dart,I think. That being said, I cant figure out what motor mount brackets i need to bolt to the motor(360). The k member has the raised pedestals that sit at 45 degreeish angles for the pucks, not the spool style. The brackets i have now don't match up. The driver side fits but is missing one of the rear holes. the passenger side is not lining up on either of the rear holes. Any body know what Ive got? what i need?