Graph Tech Tusq nut, saddle and pins for my EJ200 Epiphone acoustic guitar

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Hi, I have just recently buyed my Epiphone EJ-200 Vintage Sunburst guitar, and I want to change my nut, saddle and pins with Graph Tech Tusq ones. If anyone have allready done this, can you please tell me are these the parts that fit to my guitar and did you get some better sound and sustain.

 

Nut - PQ-6060-00

Saddle - PQ-9110-00

Pins - PP-1122-00 (pins wit black dot)

 

Thanks!