I was able to stuff my 210#, 6'-2" frame upside down in the drivers footwell and deal with the linkage and stuff without any extra holes. I think I had the drivers seat out. That helped.
What you will find handy is a u-joint socket on a long extension to hold the master cylinder nut heads under the dash while an assistant does the turning part from the front trunk.
A little tape wrapped around the socket u-joint will help hold the desired angle and make it less floppy.
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