Hi Mark,
Our previous boat was an E27, also electric motor BTW.
About two seasons before we went to our E32, we added the Tides Marine Sail Track.
As far as I know the mast was original and the upgrade was great.
BTW, even though we installed it ourselves, we bought it through a local sailmaker here in Cleveland.
It was as cheap, if not even a little less than buying direct.
He was happy to do it partly because we paid him to sew the new stainless slugs onto the sail.
I highly recommend the upgrade.
Bob