1957 (verify) Ford Thunderbird Bell Crank 

Firewall Mount  w Automatic Transmission

1957 Thunderbird Bell crank & throttle linkage. Mounts on the firewall.  You will need the other firewall mount bracket as shown in the pictures that slides over the crank to attach that side to the firewall.  Note the pictured links.

PLEASE NOTE THE 55-57 T-Birds had varying components by year and whether it had Automatic or Standard Transmission.  We have tried to match these up properly but do look closely at the pictures to verify fitment for your application