The 78 was just that, a lesser finished version of the 700. Its machining is not as precise as the 700 but only on the cosmetic side of things. Polishing and fit and finish is where the cost savings came from. Functionality is the same. All short action aftermarket accessory's will fit, albeit they may need final fitting and this is even so with the 700. I believe they had a birch stock and lesser quality sites, if any.