Walkers for me anyways only last about 5 years. If in the rust belt the bolts will not come off. I mostly cut the bolts off and replace them with stainless steel nuts and bolts so I can remove anytime if need be.
It's a shame the OEM exhaust are so pricey as I rather use them them Aftermarket. However, if you price them you see why so many opt for other replacements.
So it can be a little bit of a project as you have 2 pieces and flanges to deal with.
I dont have luck with the walker exhaust gaskets either. I mostly use OEM gaskets to keep my flanges sealed.
Get ready as if your exhaust muffler is OEM the Aftermarket are louder. Mostly for the age of these rigs the OEM muffler and tailpipes are gone in the rust belts. However there are a few around still on.
You can do it yourself. Just have the ability to cut these flange bolts off. New bolts and nuts to put it back together. Along with gaskets and nuts for your oxygen sensor. The oxygen sensor nuts are special and are only to be used once and replaced.
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7 3rd gens listed in the build thread (2 are parts mobiles)
Build Thread:
https://www.toyota-4runner.org/3rd-g...os-builds.html
Brillo's Bucket Fluid Ex changer:
https://www.toyota-4runner.org/3rd-g...ml#post3358086
Sparks Plugs Wire and Coil Information:
https://www.toyota-4runner.org/3rd-g...on-5vz-fe.html