The D16Z6 is from a 92-95 Civic EX/Si or 94-97 Del Sol Si.
The D16Y8 is from a 96-00 Civic EX.

Yea it can definately put u closer to your goal... Stock the D16Z6 runs mid 15s in an EF, so the mini me should be less than that, so say mid to low 16s...

As for wiring, remember that if u go mini me, Id reccomend u convert from preOBD to OBD1 and run a P28... This will activate VTEC for u, and has the fuel maps for VTEC... Some people opt for the cheaper, easier way, and run preOBD and an RPM switch to activate VTEC... This may work... But its not nearly as efficient... The downside to wiring OBD1 is that theres alot of work in rewiring... I opted to get a preOBD to OBD1 conversion harness for my D15B VTEC swap into my CRX so I wouldnt have to deal with it...