I love my ASAT Classic. And I love my Bigsby. And I thought that they were incompatible with out drilling mounting holes into my new (to me) 1994 ASAT Classic.
And then I found: http://www.vibramate.com/vibramate-v5tev2-install.php
So I decided to get the B5 and bridge combo, and install it on my Tribute Classic that I have been messing with. To try it out.
This is what I started with. BTW: That is a Bill Lawrence pup in the neck position.

This is the Vibramate bridge. This is the "after" picture. Notice that I had to take a small nip out of the pick guard. The "before" pic was badly out of focus


I guess that maybe the Fender body is a bit longer than the Tribute Classic body. There is about a 3/16" gap between the Vibramate tailpiece and the end of the body. I chose to "fix" this problem with some washers. The tailpiece is taking the strain just fine, and not bending or warping.


Notice that the Vibramate is not completely mated to the bridge plate. Tightening the strings takes care of that.


A few more notes:
I swapped the bridge pup into the new bridge plate without cutting the wires, or desoldering them, or anything. Just unbolt the pup from the old plate, and bolt it into the new plate.
Per their web page, the saddles are not included in the package. You have to get those separately.
It really is pretty painless, and no holes or scars in the guitar. And it can be reversed easily.
Real time to swap out & install? less than 30 minutes.
My USA ASAT Classic is in getting a setup. I will measure it when I get it back, sometime next week.
Later days,
edg