3 inches can be done, but it starts to get messy in a Tacoma. You will need new coilovers like bilstein 6112s or Fox 2.5s with 1/4 inch spacers. Add new upper control arms and a cab mount chop. Probably will need an ECGS CV shaft axle bushing to reduce vibrations. Rear is easy, just new springs, shocks, and brake lines.

I wish there were more options for the front diff. ARB selectable locker is the only one I know of made for it.

Don't just be a survivor, be a competitor.