Complete disassembly of both units reveals clean, undamaged subassemblies and big smiles knowing we paid only $375 for the lot. The 741 guts are in the foreground, and the 489 is spread out behind. In a nutshell, we’re going to scavenge the Sure Grip and driveshaft yokes from the 741 and swap them into the otherwise unchanged 489 unit. The leftover parts will be liquidated at the next swap meet to further soften the financial hit by another $150. The used spool can be installed in any 741, 742, or 489 case and is an easy $75. The uncommon 741-specific 3.91:1 gear set might get $50 (most 741 applications were grocery-getters with 2.94:1 or 3.23:1 gear ratios), and the empty 741 differential case ought to fetch $30. More on the yokes in a moment.