will I'm having a motor built but i don't want to use that head if all this head is a set of valve seals..

will let me tell you what is going on I'm having smoke come out of my tail pipe and from what i have found out it is the valve seals or the turbo is going bad and with it being a stock turbo and my car is a 96 so it might be the stock turbo for this car but since the valve seals are cheap i would like to do that as will..