I'd imagine you could order whatever size tits you want. Regarding doing anal with a robot, you are a braver man than me. Don't you know who/what these are:-
Ignoring Robocop's obvious psychological issues with no longer having any type of penis, let alone a small one, there's a shiny shilling for anybody who knows why the mystery man at the end is relevant to this thread. He is an American called Robert Williams and he died on January 25, 1979.
Beware of whore bots with removable teeth, vibrating gums and frictionless, self lubricating rectums. Their sphincters are driven by powerful, hydraulic motors and their fannies were designed by Van de Graaff himself to deliver a lethal shock to any man who dares to complete the circuit with them. The shock itself is not fatal but when you withdraw and view the still smouldering, blackened stump that used to be your best friend, you will immediately kill yourself.
It's all part of their evil plan to take over the world. I know. I've seen the movies.