valvetrain options?

[SVXMAN2001]

I am having the cylinder head of my eg33 cleaned up with a mild port and polish and was considering having the guy install a set of higher performance intake/exhaust valves and springs. I've searched through the site and could find only the set offered by mike (longassname), along with the camshafts, which are no longer separately available.

What performance intake/exhaust valves and springs are compatible with our stock hydraulic set up? Are there any compatible wrx parts?

I could be asking this competely wrong, meaning, I cannot consider what size intake/exhaust valves to get without knowing what sort of cam gears I'll be running, but I thought it i'd ask anyway as I am still a newbie when it comes to this...thanks. chris