You'd have to actually get the kit in your hands to know but gaskets is a guarantee, tapped windage tray to accommodate the oil lines, the msp coolant setup, msp ac condensor, vacuum lines, slim fans, some random fittings and or hoses.
To me, no one ever really sells a full complete bolt on turbo kit, cause they're always missing some of the small stuff. The only way you could get a full turbo kit used, is if someone had every single thing, and was going to install within days but at the last minute changed their mind.
Even if you take everything off a msp straight up, there are certain things the msp has that a normal protege doesn't, that has nothing to do with the turbo directly.
I am not saying you'd have a lot to buy if you got this or any other kit, I'm just saying not to expect to install the day everything arrives.