During the pandemic I rebuilt 3 Quadrajets to keep boredom at bay. Each is one a 1975-1980 model with the 1705 prefix in the serial #. Each has had throttle shaft bushings installed and primary and secondary shafts. Each has had several mods done to it like having the idle mix holes enlarged to flow more for a HP engine. The secondary linkage has been modified so the secondary plates are fully open at full throttle. Each comes with a written list of the specs and mods. These have been wrapped in plastic since work was done. I have no use for them. You pay for postage for 1 or all three, and they are yours.