The two Delco generators are both 55AMP. Various applications from 73-79. The main difference I can see is the clocking position for the regulator plug, maybe others not visible. These are new Delco rebuilt but look like brand new units which Delco-Remy would do when cores were not available and they needed to seed the system.  I have not tested them so you should consider them nice cores until tested. $50 each. Shipping extra.

The two 714L drive end housings are both tagged as 826902. Measurements are very close but a slightly different design , the one on the left has the part number cast into the housing , the one on the right has a 650 but matches the Delco-Remy picture and the four starters I have on hand. $15 each. Shipping extra.

Thanks