would this valve cover bolt onto a ZC
No.
i thought the only difference between the ZC and the B-16 is VTEC
Nope. The (blacktop) ZC is (grossly oversimplified) a D16 block with a special DOHC head. The B16 is a basic B-series VTEC engine, which shares no parts with any D-series units. The ZC DOHC head is very similar to a B18A/B non-VTEC head, though size and specifics are different.
could i bolt a B-16 head onto the ZC block??
Nope.
i hope it makes enough sense to someone 
thanks guys 
No problem:thumbup:
Where do you plan to get the $900-some for the Mugen cover though?