TF 998/999 parts into push button 904 ?

The short answer is, the A-998/999 gear set cannot be installed in the cable shifted trans case without extensive machining. However you can install the larger (more plates/discs) clutches/drums, but not the planetary. If installing the larger clutch drums, you will wind up with the larger input shaft (not sure if the small/early input shaft fits the later drum), which will not work with the early converter, and the late converter will not work with the early crankshaft.

PS: I use the complete front section of the later trans, except for the planetarys in my PB transmissions. Then use a custom torque converter that has the small pilot, and the large splines. Remove the rear pump, and use a full manual valve body.