I have two of these, so one is for sale, your choice:
1.) BRAND NEW NOS, with everything that came with (intake, Dominator to std Holley adapters, gaskets, bolts, studs, stickers), except the box. Never used and looks like it!!! $1,500
2.) Used - nice condition, ready to use. $1,000
NEW: I have the majority of linkage needed to mount the carbs sideways to go along with whichever one sells. Just needs a piece of threaded rod and a hiem joint, as I recall.
NEW: I will trade BOTH intakes, the linkage described above, a complete linkage set, and an identical pair of Holley 600 vac sec carbs, for a '70 & up STR-11 crossram for AMC.
Here's what a UR looks like when installed:


These run GREAT on the street (& strip), actually having more bottom end and way more top end than a Torker. Nothing un-streetable here, my 390 had 91 and a .560 lift cam.
Also have a few sets of carbs, we can talk about those, too.