Mild cam upgrade for D16A6

I can't seem to really find a solid answer to this, as always if there is a post about it that I just couldn't locate, please direct me there.

I'm looking to possibly do a stage 1 cam upgrade while I'm replacing the timing belt and doing some other repairs in the next year. There seems to be none made for the A6 but there's plenty for the Y8 and Z6, and some evidence that maybe those VTEC cams can be used in the earlier non-VTECs. I have seen a few claims of that on forums and this Skunk2 lists 88-91 under fitment specs.

And I had seen something when searching about someone using this Comp cam in an A6.

Those both might be a little aggressive because otherwise I only plan on doing a header and maybe an intake manifold. If these VTEC cams would work I'd probably go with something like this Blox stage 1.

I also came across something about needing a variable cam gear to advance the timing when running these cams, but can't verify that either. Any clarity on this is appreciated. I'm open to suggestions too. I've never put a more aggressive cam in anything. Not racing, just would be fun to have more pep in my daily.

Thanks!