OK, so the mods are done,
EMG-35HZ, CTS pots, Switchcraft jack, and a sexy brass nut.
I won't hear it at volume until next weeks band rehearsal, but first impressions are very good post upgrade. Much punchier, more tonal options (although not a vast selection still), it's still quite middy but with more clarity at the top end.
Closer inspection since last post has revealed pretty poor quality tuners. They keep it in tune ok, but the casting isn't consistent leaving slightly different sized tops to the tuning posts, not ideal, they might get pimped to later down the line. Also I think the maple used for the neck is quite soft and will ding very easily, although the fretboard is now very nice to play. The finish on the [i]back[/i] of the headstock is frankly hopeless.
I still love this bass I really do. I love the design and colours as pointed out before, and the mods have made it a sensible backup to the Sadowsky for gigs on occasion, although the Precision will hold that job down most of the time. The mods were a necessity though, as in all honesty it was a very ordinary bass for the price tag out of the box, even though I was happy with the setup and general playability of it on first play.
I'll post again once I've rehearsed/gigged it for a proper sound analysis, and I'll post a couple of pics too.