This discussion has been had over and over. The best place to start is this thread. There are lots of aftermarket skid plates and it largely depends on what your goals with your truck are.
4th Gen Armor Thread 2.0
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2004 4Runner V8 Limited - TRD Exhaust, LED Interior Swap, Pioneer HU, Tacoma TRD Front Suspension, FJ Rear Springs, 10" + 32" Light Bars, Prius Shift Knob, 275/65R18 Falken Wildpeak, 18x9 Level 8 MK6 Et0, GOBI Ladder, 06-09 Headlight Swap, TOTALED NOV 2019, RESURRECTED APR 2020
Build Thread
1998 Volvo S70 T5 - Custom Airlift Suspension, BBS Nebula Wheels, Brada Seats, Engine Bolt Ons -
StanceWorks Build Thread
2010 Subaru Forester 2.5X - Wifes Car