It is simple... Too simple to bother with if my primary business is FIXING tranny's. I couldn't charge you enough to cover my time, so yeah, too simple to even get involved with. The you'll have the customer who'll say because you were in their tranny made it worse than it was and try to get a free rebuild. For what it's worth, it is a very simple, albeit messy job.
Get a plastic shallow storage bin, 7-8 quarts tranny fluid, filter, new rubber gasket and the shift kit. Jack car, drop pan, collect and dispose old fluid and filter, install shift kit, inspect and clean pan, replace filter and pan, fill fluid and you're done! Simple and there are a bunch of write ups that almost anyone could follow.
Good luck though!
: )
