Just landed! The new Tillotson 68mm reinforced blocks approved for the AKRA and NKA 196 box stock classes.
https://www.eccarburetors.com/138190086-Tillotson-Racing-68mm-Box-Stock-Racing-Block_p_1729.html
https://www.eccarburetors.com/138190086-Tillotson-Racing-68mm-Box-Stock-Racing-Block_p_1729.html