I did the conversion per Vid1900's specs and the results are good.
Installation was fairly straight forward.
The lower left was a drop in.
The lower right did need the old EOS disassembled to reuse part of switch the on the new flipper units EOS.
The lower right required the my tilt switch to be moved about an inch, no new wiring required.
I put a rebuild kit in the upper right as I had one kit already.
It does change the feel of the game. I went from a noticeably under powered set of flippers to a noticeably over powered set of flippers.
The new flippers do make the game slightly easier but the old ones were just unplayable.
My next rebuild will be a Gorgar and I will do the conversion on that game as well.
Thanks for the great discussion.