I actually ended up not making it to the machine shop before the engine was placed in my mechanic's truck to be brought back to Tampa. Grrrrrr.... I do trust Ken Keefer's work, though.
Hope to have some positive updates for the forum in just a few days!
1968 Firebird 400 Convertible Original: Engine, Intake manifold, Heads, Body, Stereo, 3.08. THM400. Engine rebuilt by Ken Keefer early 2012. New: Holley 4bbl 670 HP, hidden iPod setup, RobbMC mini starter, A/C, front disc brakes