huh?
....ok I think I've figured it out...
Yes, putting a skunk2 cam in will increase power.
1.7L came out in '01 and theyre not good motors...the heads are not interchangeable either. Your z6 head is fine.
The 96-00 vtec head is a y8 and is just as comparable as the z6 head. It has smaller combustion chambers so compression is higher, yes, but the ports on the z6 are a little better.
If you want more compression you can either mill the head, get a thin-ass headgasket, change the pistons.
(turbo and lower compression is better
)