Towing package

I have read that non towing package tacos have 120amp alternators and towing package tacos have 130amp alternators. I was trying to figure out if I have a towing package and I read in the fuse box under the hood and it says alternator 140amp. Is that normal on a 2011 Toyota tacoma Trd sport.
 
Safely I wouldn’t go any distance much over 5000lbs and that would be with proper add ons. Brake assist, helper spring or progressive AAL, maybe sway bar and air bags, wire adaptor for trailer, correct hitch class 3 minimum class 4 proffered, correct tire pressure and drive truck in S mode.
 
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