4l80 behind G3

The 200 4r is a better trans all around it has the same gear spacing as a 904 with the added benefit of an OD . It is smaller that the 4l80 not to mention being lighter and can be built to withstand as much as a 4l80 or a 727 with less parasitic power loss.

BTW if you are worried that the 200 4r won't hold up . Remember that Buick Grand Nationals used that very same trans