Bucket Install for 75 Duster

Help! I have a 75 Duster that originally came with the bench seat. I purchased some bucket seats out of a 75 4-door A-body (dart I think). The seller didn't tell me they were out of a 4 door until I was on my way out of the driveway. They fold forward etc.

The issue is none of the brackets seem to mach anything and do not make since. Does anyone know where I can start?

The brackets on the drivers side seat outside is tall, console side is low. Blolt c/c distance side-side is 11-3/4

The brackers on the pasenger side seat ouside and inside are both tall. Bolt c/c distance side-side is 11-1/2

Also, I've seen other post that talk about the mounting plates. What purpose do these serve?

pasenger 1.jpg

driver 1.jpg