Hmm... Good call on the steering shaft gasket. I remember it on my '91 when I did the body lift, she was worn right out. Actually was getting mud up on my feet!
It sounds like an exhaust tick, but I haven't had a chance to get in there with a stethoscope yet. All the 3VZEs that I've heard have it, but mine seems to be just a touch louder than "normal".
I like my street trucks to be as silent as possible. The rig, hahaha... if it's not making noise it means I stalled it