Champions League — quarter-finals and semi-finals draw

Random question. Can you swap keepers during a penalty shootout?

I know you cannot sub, but lets say it's the 120th minute and the manager subbed his LB for one of his keeper so subbed him on as an outfield player.

Could i then pick and choose which keeper faced which penalty?
I was wondering this
 
City about to do a double treble, dunno why I even bother watching football