I did see the four bolts you mentioned, I didn't have to touch those when I replced the passenger side mount. All I did was unbolt three bolts, lift the engine just enough to slide the rubber piece out and install the new one.

This engine mount looks like it gets bolted either to the frame or the engine with only two bolts. After starring at it for a while I think it's probably (engine mount and the support) one piece that gets bolted to the frame. In my case the support is already welded to the frame, all I need is the rubber piece.

I just wanted to make sure this was not the engine mount for my truck. Now the fun begins trying to return this engine mount and get the correct one sent asap.

[img]http://community.webshots.com/scripts/editPhotos.fcgi?action=showMyPhoto&albumID=233194081&photoID=243896457&security=GLKWhx[/img]
Thanks for your help!