Weatherhead Brass Brake Distribution Block 1969 Chevelle Copo Etc 3369090 3374322.
Mounts on the frame under the brake booster.
Nice clear Julian date of 9 127 which is 1969 May 7.
"Patent 3369090 3374322 with Weatherhead logo" on the mounting bracket.
Excellent "Survivor" and it works just fine with NO stripped threads. Hard to find one in better shape.
$125 USD with FREE Shipping.
Most likely fits many other A Bodies but know your application.
See my other Block for a 1970 Chevelle here.
https://www.yenko.net/forum/showthread.php?t=155975