[Godfather MKIV]

I was looking into getting a single turbo kit for my 94 N/A automatic supra, and i was wondering where i should look and what other things i would need for the engine. I saw at powerhouseracing they had a single turbo bolt on kit for the 93-96 N/A for 5,300, would that be a good deal or should i look elsewhere. also would it be best to upgrade other things such as the transmission, etc... im a newbie to the supra world, just picking up my first supra this month so help would be much appreciated...