I'm back! This project is on a back burner and I'm taking care of family stuff but I'm back to it now. I found this coming out of the timing cover I assume that is it?I attached a pic of the gear assembly & splined shaft in my last post. . The gear assembly is on the top part of engine block, on the inside of block. If your long block has this, you'll see the splined shaft of the gear assembly sticking out of engine block where timing cover is.
The splined sleve is in the left part of pic. It attaches splines of gear assembly to splines of wp.