WiW: Aluminum 2bbl Intake

Okay, fresh back from the junkyard with the 2bbl in hand... it may be fun the get a kickdown to work with the manual trans carb...

Are there any tricks to removing the old bolts that hold the intake and exhaust together? I cut the heads off the bolts to get the intake off of the exhaust manifold (they started to twist off when i heated the manifold and turned the heads)