I was hanging out at DMZ Fab & Race Prep today and took look at their rear long-travel kit for the 2005 + Toyota Tacoma. I have to say, Tim Duncan (owner) does some amazing work fab work, and this is a really trick system.
The long travel kit is a super high-quality system that gives an '05 or newer Tacoma 17 inches of rear wheel travel. It incorportes a spring-under design, comes with top-notch Deaver leaf-springs, and provides a dramatic increase in uptravel. Check out DMZ. www.dmzfab.com