64+ Riviera Headers in 1960 Invicta???

I wasn't sure if this has been posted before, I didn't find it in any of my
searches.
Does anyone know if the Sanderson Shorty Exhaust Headers for the Buick Riviera V8 64 - up Nail Head 401 425 might fit a 1960 Buick Invicta/Le Sabre??
Just a shot if maybe someone was brave enough to have already tried it or knew enough to say if they would fit or not.