The fastener that is in the hole on the LH end - is that a regular stud with 2 nuts threaded on?
Or, is it one of those special studs that is forged with a integral hex nut - i.e. the kind you find in the forward-most exhaust manifold holes?
Also, LOA of the brace and bolt diameter/TPI?
Where was it when you found it?
What is the emisssions code - e.g. if it's a California package it should be YFN, YFW,YJX?
See part no. 14048884/ item 32 in the image below:
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BRACE. Air Injection Reactor Pump. Air Injection Reactor Pump and Multi - Function Air Compressor.