Will a 1998 4Runner power mirror setup bolt onto a 1998 Tacoma?

 

it should. they're the same mirrors

 

And you're 100% sure about this?

 

92.6% sure. i see enough of them in the junkyard and they look the same. i could be wrong though

 

Just because they look the same does not mean they physically are the same. The bolt pattern could be different, but thats about the only problem I can think of.

OP, just find some Tacoma mirrors so you know they will fit.