Since I'm going into the valvebody to do the Transgo, should I go ahead and invest in this, or does it come with the shift kit?

http://cgi.ebay.com/ebaymotors/ws/eB...MEWA%3AIT&rd=1

 

That's a performance replacment VB plate...you don't really need one if you're buying the TransGo kit as it comes with the drill bits for the stock sep plate.

I'd consider one of those plates if your stocker is overly modified or somehow non useable or doing a complete rebuild.

FWIW