NOS is out of question - must look stock under hood. I can afford 3x nos kit to get the same result and have the car looking stock.
As I already have nice 1.6 adj rockers and I'm tempted to TRY the solid cam. Can you recomend any available cam with specs like Streetwize posted? Or I need to custom order it?

I can try the tighter converter first - any recommendation? I live in poland and i need something off the shelf.

Valve springs - they are stock stealth springs, they have 3 years now so I doubt they are a problem, moreover I don't have equipment to measure their pressure...