TRD quick shifter question
 

Okay , A guy is selling me a quick shifter for cheap.. Just the quick shifter only. He says he used it in his stock cage but upgraded to twm because of wanting something shorter but I was wondering if I could install the Trd quick shifter in my stock shifter cage? Or will it require me to get a trd cage? And overall will you rather have the trd shifter or just the stock?

Question 1- Can I used the trd quick shifter in the stock shifter cage?
Question 2- do I have to purchase a trd cage?
Question 3- Scale 1-10 do you think the trd quick shifter is better than stock, which do you prefer, stock or trd. (Not looking for Megan, b&m ,twm or doctor isotope answer ETC. this is just for right now and I will purchase a Megan or doc.