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I was searching and came across an excellent article from 12/2012 by 'wlagarde' on his transom rebuild and old transom holes and the BIA hole template. He included the Old?New hole template schematic someone here at WC put together (Joe?).
In the process of having a 2014 Yamaha F70 put on, and having the old hole layout from an '87 Yamaha 40, the lowers holes appear to be useless, or are they?

Before purchase of this 2014 F70, I removed the old 1987 40hp and oversized the mount holes, then lined them with Westsystem resin before remounting it. From the pics by 'wlagarde', it looks like the F70 engine bracket, if similar to his (Nissan?), may not cover the old lowers.
If possible, I would just add a bit more Westsystem resin lining to them and use them as either extra splaswell drains or pass-thrus for tranducer-whatever else sender lines, if not blocked by new F70 bracket.

I noticed in the 'wlagarde' photo album, he also went with the Green holes, and if I'm not mistaken, he had the same 'old layout' I have. I also noticed he now has run his transducer and another sender line thru each of his splashwell drain holes.
So, could the 'old layout' lower holes be used as a pass thru for sender lines?

Related question:
In my 2014 F70 install on this 1987 Super-tauk, the upper holes remain and the 'Green' holes were newly drilled, which locates them about 1-1/4" from the bottom hole edge to bottom of splashwell. Plenty of room for the 1-1/2" circular washer.
So the question is: with the 'Green' hole layout, is there a limitation in raising the motor to the bottom hole of the F70 bracket?
I may have 'boxed myself in', since I instructed my installer to drill the green holes, but now see that if I had used the 'Yellow', I might have additional range in raising the F70 all the way up. Am I missing something here?

BTW: My hull is "3C8035"; a 1987 SuperSport, which I mod'ed to a Montauk type clone, for anyone keeping track of transom hole layout/splashwell fit.
Believe it or not, for the boat not yet being in the water, I'm having fun.
Thanks for your comments,
Joe