This the left, drivers side upper trailing arm with the extra brace used on the heavy duty option cars. Nice shape, not pitted or bent like most. Price is $60.00 shipped, Paypal accepted as sales, Joe 602-298-7090
I do have the hardware for an extra $8.00.

 

This looks like a regular rear control arm. What am I missing here?

 

The extra metal tab on the corner by the bolt hole, first and last photo shows it.