$3500 supply, install, tune? seems a bit high?
Ecu = $1700
Install = $90 (just say 1 hour, won't need it, it's a plugin for goodness sakes)
Tune = $1710 - that's errr.... a lot.
even if it's 2 hours labour of install time, which is very generous, that's still a massive tuning bill. You'd be hard pressed to find a tuner who doesn't say how easy it is to tune the Link/Vipecs up.
Roy, you could always try Trent, you'd be surprised by how many different ECU's he's played with over the years. If not, i'm sure he could sort it out if you could get the software (but prob not much point if that costs as much as a new Link)