There is a slick way to use the old pipe to thread a small guide wire through it and thus the block before you remove the old pipe. (You pull out the old pipe, leaving the wire in place.)
But since you already pulled the old pipe out, you may have luck fishing a small diameter, stiff wire through the block, then start the the new pipe through by pushing the pipe onto the wire which is now through the block.
Carl


1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission