Q's on a used turbo I bought...
 

Here is a pic of the turbo. Are these two pieces supposed to be flush and sealed or maybe a gasket between them? It is pretty flush, but I can kinda see small spaces between the two.

http://i15.tinypic.com/4ftttop.jpg

Also, this is just oil cooled. Does anyone know if there is a detailed how to on installing one like this?

Thanks