What do you want one of them for? 80 series have the same but they are a bit better because toyota tried playing with something on the air intake I think it was and on paper they have more go but they don`t. Plus one out of a 80 will be cheaper then out of a 100 series even they they both had the same ks.
You do know they are a very thursty motor, I have a 80 series with one and its shocking on fuel.