Modifications to digital ... SCD777ES

Considering having my SCD-777ES SACD player modded to include Blackgate capacitors, Vishay resistors, Harris diodes, hook-up wire and cardas rca jacks. This could cost around $1000. What improvements would I expect? Is it worth the cost? Who has had this done and can comment? I prefer this over an DAC because improvements would be realized on cd and SACD output. Syst includes Talon Khorus, 777, Aloia Inductive amp/preamp, and Audio Tekne cables. I realize Great Northern Sound "may" offer an output stage board on March but this was originally scheduled for Dec.