I performed this job today. I decided to drain the block. Got roughly 1/2 of the drainage from rad, reservoir, overflow and 1/2 from block. Whole job took roughly 5 hours in between distractors. No real hang ups. The WP was removed by using 2 of the WP pulley bolts. Ran the car up to temp with heater on and bled the system. Let it cool, topped it off and ran up to temp again. All is well, no leaks. Another successful DIY. Thanks for all the input.