I actually have one of Dave Pegg's old Ibanez'.
I got it through a friend of his son Matt.
After much searching and questioning I've discovered that it's an SR05.
A key identifying feature is the bridge.
The saddles are on threaded stalks.
It was modified for Dave quite a bit.
It has EMG J-Type pickups with 6-pole Strat type pickups mounted beneath them as hum-cancellers, sort of Alembic style.
They're not supposed to alter the tone but I've never disconnected them to find out.

The orignal Ibanez circuit has been retained
There's a master volume pot set into the back plate.
It was defretted mid Jethro Tull tour in the US after Ian Anderson introduced a song into the tour set that he wrote with Steve Bailey.
The fret slots have been filled with a light coloured hardwood, probably maple.
It sounds SOooo sweet.
I love it and will probably part part with it.
It came to me with La Bella Deep Talkin' round-wounds on it and that's what I've kept on it so far.
They're getting harder to find in a 5-string set these days.