Check out this time slip

I make multiple restrictor plates for our 10 second Valiants for
the 11.50 Sportman class out here in the West and for the 10.90
Superstreet. However, we seldom run local brackets anymore.

There used to be a company called "Adjust A Plate" or something like that,
but I have not heard of them for years. Came with a bunch of quick change plates
that did not require the carb to be removed.

Anyone know if they still exist = They did not answer my inquiry.