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Power to Manual Conversion Steering Boxes These Borgeson Steering Box Conversion Kits are great way to go if you want to shed 28lbs. and free up some extra horsepower. Borgeson only uses the GM 525 box because the Vega 140 steering box is not adequate for mid-size cars. The GM 525 uses a 3/4"-30 input shaft.
Manual to Power Converison Steering Boxes
These Borgeson Conversion Steering Boxes make it easy to add power steering to original manual steer equipped cars without having to change or modify steering shafts and pitman arms in most cases.