How good is the Technics 1200 Mk2 with all the KAb upgrades?

@fluffers, I agree with the two above posts.
Any of you long timers on Audiogon remember psychicanimal from the original Audiogon? He had a tweaked out 1200 Mk.2 with all the KAB upgrades and it sounded fantastic! There was a lot written about it in the forums fro long ago, I don't know if that information is still available on the current Audiogon.

I have an MkII with the Kabusa upgrades described above, I use it with a Paradox Pulse 103R (requires additional extended weight for tonearm). For my 2 c, for the money it's an excellent TT. I use it primarily for playing 45 rpm vinyl and any vinyl that may be dished or slightly warped. The clamp is a Michell.  For reference my main deck is a MS RX5000. 
In your situation, given it's new and a sunk cost....it's a great find and I would put to straight to use! :)

Not as good as my VPI.

I've heard them sound great. There are other upgrades that also take it to a higher level including bearing upgrade, platter upgrade(Mike New from Australia does what are some of the best, external power supply and Isanoe feet. 
Tonearm upgrades are also good improvements over even the rewired original if you are inclined to do so. With Transfi Terminator arm, a friend has better performance than his previously owned ELP laser table and his VPI Aries. 
Check out theartofsound British forum, the section called Techiepedia for many 1200 tweakers' experiences. 
http://theartofsound.net/forum/forumdisplay.php?46-The-Techiepedia
Cheers,
Spencer