I changed mine to a set of [ame="http://www.amazon.com/gp/product/B00480GZ8O/ref=oh_details_o03_s00_i01"]THESE[/ame] earlier this year & I'm pretty happy with them.
They're not as white as the silverstar ultras, but these should last a lot longer... and they're less than half the price :thumbup:
+1 on cleaning the lenses too. I was too lazy to sand & polish my old lenses, so I got a set of aftermarket lights on evilBay & they made a big difference.
Some 400 - 800 wet dry paper, buffing & polishing compounds & a weekend of nice weather will make a big difference in the old, faded, oxidized lenses.