what parts to get for a 318??

Here are some basic refresh kits at affordable prices that you can use and build off of (pun intended).

You can get just main & rod bearings, rings, & gaskets for $200 in the basic kits A & B.

Or go with the more complete kits in C & D with all of the other kit, but oil pump, freeze & oil galley plugs, and pistons. Kit C has cast pistons, kit D has forged.

http://www.manciniracing.com/enrebkit.html