mtrdrms

I found out today that my buddy's oil pan is rusted through on his 99 Taco. Its a 4cyl auto 4x4 and I was hoping there was someone on here that has changed one before. The stealership wanted 900 bucks so I am guessing that the diff needs to come out or the engine needs to be raised. Any help here would prepare us for what we need to do. Thanks