The motor purchased from Fesler came with the DBW throttle body so I just kept that one. By the way, it was cheaper going that route because I found a complete kit that will run an LS3 for cheap..........how cheap.........$1000 shipped and it includes: engine harness, ECU, throttle pedal, pedal harness, MAF, oxygen sensors, and weld on bungs for oxy sensors. I know it sounds too good to be true but I ordered it already, paid for it already, and anxiously waiting for the UPS guy to knock on my door tomorrow!