Sounds to me from comments in this thread that it could be as much as 100 lbs total.
Figuring the steel beam, heavy mounts, and the big 5 mph shock absorbers.
I know from pulling a set of 5 mph absorbers off a Maverick that just those are very heavy.
Now think about weight vs power...
100 lbs essentially equals 10 rwhp! Or .10 in the quarter mile...
Then being cantilevered out over the front end, the affect on performance and handling is tremendous.