I own both a righty Danelectro Longhorn Pro and a lefty Jerry Jones Longhorn. Never had any issue at all with conversion of either from lefty to righty or vice versa. Keep in mind they've reissued the Longhorn
4 times, each one slightly different. The Longhorn Pro is IMHO the best built and sounding of the 4 Dano Longhorn reissue versions. I will say however that if you're serious about getting a Longhorn as something you are going to play
a lot, the Jerry Jones is a much superior sounding and constructed bass- so you are "getting what you pay for" to some degree.
Maybe you're just into the Longhorn for it's looks, but if it's tone you're after:
Of all the newer Dano stuff that has been offered over the past several years, I tell you right now, no question the best sounding of all the basses has been the Hodad (see bottom). It's one of those "best kept secrets" in the bass world. The Hodad has the same hollow body construction as the Longhorn, with a Bass/Treble switch, a stacked volume and tone knob and Select-O-Matic 6-way pickup switch. Of course it can do the Longhorn tone, but has more punch, a wider variety of sounds (can cover both your P bass and J bass requirements, plus some stuff that only the hodad seems capable of), and cuts through better than most anything else out there-
and it's a long scale bass with fully intonatable bridge and heavy tuners-
and it hangs perfectly upside down. I got one when they first came out- you can't really tell from the pic but it's a beautiful iridescent pearl metallic, I was lucky to get one in this rare color, just about all of them were black or blue metallic.. They didn't make Hodads for long, but they do turn up used and if you're patient you will catch one at a pretty affordable price because not that many people are aware.
But don't just take my word for it- check out the reviews:
http://reviews.harmony-central.com/revi ... +Bass/10/1