All of the T/A covers I've had so far for the 10bolts have come with the wrong mounting hardware.
Also, you've got to put some hi-temp silicone on the cap studs before you preload them, otherwise you'll get a small leak there. Not a big issue though.
Been liking mine for a few years now on the sierra and just got another to go on the silverado. Was thinking of trying an lpw cover and brace instead but decided not to bother this time around.

 

i bought one for looks lol my truck isnt capable of a hard launch