Sweeney 392B Torque Multiplier Wrench 2,200 ft lbs (2,980 Nm) - 1/2" in, 1" out | eBay
ThreeH 1/2''(1.5 to 147.6 ft-lbs.) Heavy Duty Digital Torque Adapter with LED&Buzzer Alert (1/2'' Drive & Includes adapters for 3/8'' and 1/4'') - - Amazon.com
DRTQ-100-f (10-100 ft-lbs / 13.56-135.58 Nm) | Electric Screwdrivers from Delta Regis