Convert manuel change to full auto.
Changing a valve body is no big deal. FINDING one in your part of the world might be a trick, although you can order performance bodies that are not manual, just tricked up for performance shifts.
BUT.......I have a manual in my car and LOVE it.
Easy to find out. Just put it in "drive" and if it starts out slow, in 3rd
Then put in 2nd and start out. A normal vb (in 2) starts in 1st, and shifts to 2nd, but then not up from there.
So if you put it into 2 and it starts and stays in 2nd, you have a manual.