Convergent Audio and address???

Anyone have their ph# and address?? Having a difficult time finding it. I'm looking to upgrade my CAT SL-1 Mk 2 to the current version...thanks audio members!!
I linked to the manufacturer's page here on AudioGon and I came up with the following:




85 High Tech Drive
Rush NY 14543 USA
To look up companies you can use Stereohphiles AV links or Stereo411
I am pretty sure that CAT will only upgrade a Mk II to a MKIII, but not beyond to an Ultimate or Ultimate Mk II. Too many parts changes. Let us know, though.