BII Trannyy Step

I was wondering if someone could give me some direction or steps on how to take out a trans and put up another...which ever is easiest cuz i found a used trans with a 90day warranty for 300 and some guy said hed put it in for 175 but id uno i might try and save my money...would i need anything else?????thanks greatly appreciated

$ 175.00 is not unreasonable, but if you have the facilities and tools I recommend anyone to give it a go! (you will always learn something and a self-satifation of doing it yourself) and who knows maybe the old-lady may treat you!