Replacing the independent front suspension, also known as IFS, on your vehicle can greatly increase your vehicle’s suspension articulation. This modification is also known as a Solid Axle Conversion, SAS, or SAC.If you have the answer to the following question(s) please email them to: info@aftermarketbuildersguide.com – Who was the first person and/or company to have a functioning Solid Axle Swapped rig?