The Staytrem bridge is a great improvement over the original on a number of levels. Better sustain, less rattle, easier adjustment, greater stability.... Can't say enough good things about it.
When ordering, you can state in the comments field of your shipping info whether you want the the JM/Jag style narrow bridge, like the PS VI shipped with, or the wider 1" bridge the vintage VI's had for greater range of intonation adjustment. (Be sure to order the correct radius - 9.5 for the Pawn Shop VI.) http://www.ebay.com/itm/JM-bridge-to...item2a3052e2ce