For 1949-54 Chevy passenger car spindles. The arms attach with bolts through the lower 2 backing plate mounting holes (3-1/8" center-to-center) on spindle. The distance between the mounting holes to the center of the tie rod hole is 6 inches.
Note: Chevy arms use a 46" eye to eye tie rod link when used with a 48" wide axle / Chevy spindle.
Steering Arm Ends Guide (GIF)
Parallel Steering Set-Up Guide (GIF)