KITTAZ parts required to become a TAZ?

Hi! I’m considering getting a KITTAZ mainly because I’m cheap and I want to understand how the printer I just bought works. I’m all about open source and love that you guys are too!

The thing is though, KITTAZ != TAZ 4. I know there are some parts different like the lcd display but would someone mind spelling out exactly what else I’d need to buy/upgrade to take my KITTAZ to a full on TAZ? I think if I get a KITTAZ I will want to upgrade it to a legit TAZ asap and this way I’ll basically build myself a TAZ.