Jayd
The spacers you describe are OK for your application , if they are made from billet aluminum .
If they are cast aluminum don't use them for anything other than a paperweight .
The best way to go is to use longer studs , and a thru hole spacer .Then the spacers only function is to space
And no rotational force is applied to the spacer .
PS I manufacture wheel spacers and other race related parts
Dave