I am planning on calling in a favor from my old boss who owes me money to have his friend (owns a local machine shop) to refresh my cylinder head (E88) and install a new cam. I was wondering what oddball things he'll need to be especially careful of when redoing this head like not removing the came towers? I know I really should have a shop familiar with Datsuns work on this but hey, it's free?

Craig,

I refer you to this old discussion with respect to removal of the cam towers.

http://www.classiczcars.com/forums/showthread.php?s=&threadid=10076&highlight=cam+tower+shims

Some of the thread may not apply to you, as this was about E31 heads, and I suggest you look at a couple of books and manuals about surfacing the deck and aligning the cam in the towers.