1995 4l60e interchange years
Both transmissions will bolt to the LS1, or any GM motor for that matter. The electronics, however, will not work. I am no expert but I THINK you can use the older model, but it will not shift properly, and may not shift at all. I think you could shift it manually but that would get very old very quick.
I would just sell the trans you have now and get the one that works right with the setup.








