Parts used in this installation:

"Kit II plain aluminum for Harley Davidson". P# ABK02090-0000 at: http://gpsforless.stores.yahoo.net/unbrackitii.html. 7.6" long crossbat originaly supplied with this kit is replaced with 5" long crossbar. Bracket kit is installed without spacers.
"Extension Joint assembly for BPII (plain aluminum)", P# AEJ00002-0000 at: http://gpsforless.stores.yahoo.net/exjoasforbap.html.
"Base Plate II (plain aluminum)", P# ABP00002-0000 at: http://gpsforless.stores.yahoo.net/baseplatei.html.