69 Valiant rear seat

'67-9 2dr sedans should fit ok. Not sure on whether the '67-72 2drht's would be exactly right or not. I would guess that it would, but, no guaranty from me as I haven't actually tried that swap. The 4dr seat bottoms are a bit different shape on the ends, but, should fit in the car and the back should be the same. They may have changed the way the seat back was anchored over the years. Some have bend-over tabs, some had bolts with washers. No idea of the bottom anchors were the same for all years and models. Same design, but, I'm not sure they're all in the same exact place to catch the seat frame. Someone here has probably done that swap and can add more info.