I think with original style bushing the washer cups over it-- if using the 2 piece it goes on with the cup side out.
all cars I have parted/jacked with had the cup side toward the bushing.
Yes, this is the way most do it but I saw where a lot of people that had the 2 peice poly bushing split from the cup being out.
I put it back with the cup toward the poly bushing to keep it from doing that.
Never seen any disadvantage of it being faced in.
