effclef--I am building an eight-string right now with that idea in mind. Thing is, on Ric 12's the octave strings are correct on the left side only--on the right side it's reversed, the large string going into the slot-mounted tuning machines. So, how to do that on a bass? Fender-ize it! My headstock is a 4-in-a line Schaller M4's (which only take a 1/2 hole, not a 9/16 like Gotoh-style machines) for the regular strings, with 4 Schaller M6M machines (the mini-mini machines, but the only ones with a long-enough shaft to be able to locate the slot w/o it interferring with the M4's) mounted classical style in-between the regular machine heads. Believe me, this one is not one for making mistakes--I measure 4 times to make sure it's right. I cannot tell you how many headstocks I went thru to get the spacing right.
It was my intention after finishing this to post pics, because one day when I have the fundage I'm gonna give this bass to Alembic and say make it right!..my amateur building pales and dies compared to Alembic (or maybe they will think I'm a genuis and hire me...hmm.....), plus I have no place here to spray a finish and will resort to oil-finishing my creation.
--J