So i dont want to paint my sun visors black so are there any visors from a car (black visors) that fit the mk1? Thanks. Or should i just paint them

Any from a MK1 will fit, if you want the dark ones. You'll need a very late 2003 or any 2004/2005 vRS. Or, a L&K with the grey lining.

Does anyone know if the sun visors from an Audi A3 8L or 8P fit? Black sun visors seem to be quite easy to find in these models.Also, do the grab handles from a Golf Mk4 fit?

Golf handles should fit, but it's best to double check if you can. And, unsure on the audi.