sorry for the grammer and spelling
given the chance every one plays at some point but yet, check the timing and compression. replace the o2 you will find most times the o2 is the prob, if that does not work then again check the timing and compression, if for what ever reason its still doing to i would and if the money is there go pull a head form the some storm in a junk yard and have it rebuilt and put that on it, you might have valve that are sticking but are not making nose. all so check the motor and trany mounts they are go bad and when you driving you can get whats call torque rap it will make the car seem as if its miss firing. all it is is this the motor is rocking back to far and missing up the drive line angle.