Coronach, what you describe is :
# 325 - Belt Drop Holster Adapter.(Lowers the standard ride by 2 1/2" on these Duty Holsters - 200 (Level 1), 295 (Level 2), 6280 (Level 2), 070 SSIII (Level 3).
Don't have the adapter on my 070. Prefer the mid-ride (std) position with regards to carry, draw, reholstering, retention.
You can also get the above holsters with a belt drop of 1 1/2" already fitted.
Numbers are : 2005 (for the 200), 2955 (for the 295), 0705 (for the 070). Not sure about the 6280 (it's a mid-ride to begin with).
Try this, hope it helps :
http://www.safariland.com/dgcat/325.htm