The Holes can certainly be filled with JB Weld(Always gives me pleasure to see any and all of those Whaletale things tossed). As for the second Motor with the damaged AV Plate, it appears to me that Metal forward of the Damage, is bent upwards a bit. That should be Straightened, as the Curvature can cause Water to curl up, instead separating cleanly from the AV Plate as intended. A Welder, skilled in working on Aluminium should be able to do fix that, and also rebuild the missing Metal
