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Next up we have the DBW throttle body, this happens to be a 90mm unit being used with the L92 HO V2 engine. While many are converting back to cable-operated units on their retro projects-stop! The DBW throttle body can easily be converted for use on the Gen-3 LS1/LS6 engines. Mast sells a complete conversion kit including the DBW throttle body, M-90 ECM, DBW foot pedal, and complete wiring harness for between $1,799 and $2,169 (depending on options and parts needed).