well 76 was quite a few years before I really got going on bass, but as many righty basses I played ( play ), I just leave the strings the way they are. I never cared since I learned inverted, plus if I wanted to sell the thing, I could just box it up and sell it without any reversal of anything back to normal righty.
now a days I know the neck pretty well, and play my couple leftys strung lefty with the E on top, but for any "gigs" I still play inverted so I don't have to remember the strings are opposite of what I am used to.
also, I just bought a GSR300 lefty that HAD to have been used by a righty because there are 2 strap pins, and the strings are already flipped inverted, so I'll be able to pull it out and jam on it with no mods.
( I have NEVER EVER seen a righty play a lefty guitar/bass live before ) --in the sea of righty unitss out there from 20 bucks to 20,000 who in their right mind would do it anyway....