I'm not sure if they'll fit or not. A lot of Mid Size Fords are front stear cars. Mustang's are Rear Stear. If the Monarch is a rear stear, I would think it should fit.
http://members.tripod.com/tangdar/
'67 Coupe project car (Did I say project car? I meant pile of rust)
http://www.americainter.net/~fevans/tangdar_flintstone.jpg
http://members.tripod.com/tangdar/
'67 Coupe project car (Did I say project car? I meant pile of rust)
http://www.americainter.net/~fevans/tangdar_flintstone.jpg