hello, new here....bought a 85' Buick Regal 3.8 4 barrel. Get the car up and running only to find out it has a bad trans. If you put the car in drive the trans starts to chatter and bang when it shifts. If you put in 1st and change the gears manually it'll act fine. Not sure what's going on with it but my question is, I have a 4l60 and a 4l60e laying around that are both good tran's. Is it possible to bolt one of those trans' to the Buick 3.8?