OH pretty much everything frontwheel drive that GM made.
Pontiac transport/Montana and Chevy Venture vans
Malibus, Olds Achievas
Mote Carlos, Impalas
To name a few.
If you are replacing the engine with a used one check to see if the head gaskets have been done or the intake gaskets.(Intake gaskets more so) Pull the oil filler cap and if it looks like caramel pudding on the inside...STAY AWAY!!! These engines are very prone to both problems mentioned!
Sorry to be the bearer of bad news! But if you are looking for a new used eng. then you probably know why!