blueroo

I'm in the process of doing a custom build. I was wondering if the transfer case and rear axle from the R34 could be used with a different transmission such as a Lenco for example. The reason I ask is I found a picture of the transmission and transfer case together but there appeared to be two fluid lines running from the t-case to the trans and I wasn't entirely sure what they are for.

As for the rear axle I read something about a fluid lock up or something and I wanted to know if this was tied into the transmission or not