It took me 5hrs from getting out jacks to parking after successful test drive.
But thats meaningless, I'm seriously slow, I LIKE to take my time, read directions, clean as I go, proper torque, double check everything.
Most people would get it done in half the time, 2-3hrs. Figure the time it takes YOU to replace trans fluid & filter, then double that time.
The actual parts are super simple to install. Its figuring out what part is what ,for those of us that do not have experience w/ these trans, that takes the time.