Avanti's shock absorbers were made for Studebaker by Gabriel.
From a Gabriel "3 shock absorbers in 1" ad: We are pleased and proud that Gabriel Adjustomatic shock absorbers were selected as original equipment for Studebaker's great new Avanti. But we are not surprised. The car is a magnificent combination of grace and advanced engineering. Gabriel Adjustomatics are the ultimate in shock absorber performance. Thus they are go-togethers. King-size, exclusive Adjustomatics are the only shock absorbers that enable a driver to select the ride he needs for the driving he does . . . a choice of three positive ranges. No car can have finer shocks than these, and you can have them to sell for any car. And you should. Why? Because it always has been, always will be, just plain good business to sell the best. Gabriel Adjustomatics – like 3 shock absorbers in 1. Muscle Car Of The Week Video Episode #138: 1964 Studebaker Avanti Paxton Supercharged R2