I am trying to find out if I can install a set of 99 4runner power leather seats in my 03 Tacoma Doublecab. Will they fit and will there be much modification involved? Appriciate any help.

I did this swap with manual 4runner seats on my 2003 a few months back. The inside track floor brackets on the 4runner seats match the Tacoma bolt holes..... However the 4runner outside track floor brackets DO NOT line-up with your Tacoma bolt holes. You will need to re-use your Tacoma front and rear brackets on the outside track. (both driver and passenger seats) They just need to be spot welded onto the 4runner tracks.....Can't help you with wiring the power seats since I used manual 4runner seats.....The 4runner seats provide great lumbar and thigh support. Good luck.