Make IFS

Make Your Own IFS Based on Mustang II Geometry
Article by: Welder Series

Although the Mustang II is not the best layout for competition, it is a tried and true geometry for thousands of street rods and hundreds of thousands of highway miles. Many manufacturers have all of the parts needed (spindles, brakes, springs, sway bars, etc.) Of course, we hope you will use some Welder Series parts in your design.

The upper arm pivot points are shown as 29-1/2” apart. The stock upper arms adjust in slots, so this dimension is not absolute. It is a starting point, and one that can be used when the upper arms will use threaded adjusters to dial in the alignment.

The side view shows the upper arm pivot center line at the front, the center, and at the back. These dimensions will give the stock Mustang II anti-dive angle of 4 degrees.
Several builders have made their own I.F.S. using Welder Series’ Mustang II crossmember parts (#14373, #14375, & #14306) and #17500 shock mount frame plates for their upper arm and coil-over mounts. Upper and lower arms can be made using #108211 ball joint housings.






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