Safe to use Wheel Adapters 5 on 4" to 4.5"?

I use 1" BILLET spacers/adapters on my 07 GT500 which is putting about 475hp to the wheels - I also track the car. ZERO issues and I've had them 10 years. Just get the right stuff - listen to 72bluNblu, he sounds pretty knowledgeable.

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