Exhaust/Intake Valve Seat Removal?? 1987 RAM 50 2.0 M/T

Currently rebuilding engine and have the head apart. One of the items that the DODGE mechanic shop manual suggests is the replacement of the Intake Valve Seat and the Exhaust Valve Seat when you overhaul the valves. Diagrams suggest that the Intake Valve Seat and Exhaust Valve Seat are not reusable. Saw them when ordering parts so I have the parts. Now the Biggie. How the hell do you get the old one's out without trashing the aluminum head?? Looks like they are a pressed fit into the block. HELPFUL SUGGESTIONS??

1987 DODGE RAM 50, 2.0 G63B...