1991 626 engine swap?

[ept626]

I have a 91 Mazda 626 runing on an f2 motor with 190k miles on it. I am thinkin of swaping engines or just overhauling. If swap, I would go for the FE3, which is a 2.0L twin cam doch engine, I've seen it on other 626's and I like the motor. Would it be best to swap the motor or just keep the same one with an overhawl?....