a body big block exhaust manifolds
Those, unfortunately, are not M-Code manifolds...they are 383, 1967 ones. Depending on your installation, they
might work on a 440 A-Body...you'd have to test fit them on your car to be certain. 440 (M-codes) drivers side is longer just above the steering-column-wrap-around area.
Check this site out for the correct casting numbers and application of these...
http://www.dartstechsite.com/exhaust_castnumbers.htm
