1994 F150 5.0 with manual locking hubs. I assume my front axle is a Dana 44 because of the giant 44 stamped into the axle, but I'm really not sure what the heck is in there. My question is this: What type of spindle nut is supposed to be holding my hub together? Right now I have a 3 piece system with a nut, spacer and then another nut. But it looks like everywhere I look that set up is for automatic hubs. Should I have that or just a single nut with a cap on it?
Here's what I have: http://i.ebayimg.com/00/s/MTIwMFgxNjAw/$(KGrHqJ,!mIE642SVQRsBOyGw4zzYQ~~60_57.JPG

Should I have this?: http://www.rockauto.com/info/42/05307-007__ra_p.jpg