On my 92 (EG) Civic, I upgraded my MC from the 13/16 (DX) to the 15/16 off a 91 Civic sedan EX. The MC bolted on to the stock booster.
Only that MC will bolt on to the stock booster. If I went with the Integra 15/16 (RS) I would need to change the booster as well.
The mod bolts directly on my generation...Im not sure if it is a straight bolt on for the 96+ (EK) Civic boosters.