Are they the same?

[Kranz]

Hi I have a question and would like some in put on, Since I am new to owning a DSM. I have a 90 talon tsi awd and was wandering if the turbo 4g63 is the same as the na 4g63 the g1 6 bolts? Far as the internal like the cams the head, block, crank, and so on. I have herd that they are not but when I looked in my Chilton book for the 90 to 94 models the turbo and na the specifications where the same for the most part and on the same page. The page I am looking at is 3-4 of the engine and engin overhaul. The reason I ask this is that I am going to rebuild my engine is the spring. I would do it now but things are tight and a little research wont hurt. I found it is easer to find a na motor than a turbo motor in the junk yard. If you have any other in put on do and don’t's on these engine for me that would be great.