Auckland Reactor drew the outside of the second row when the barrier draws were made yesterday.
Auckland Reactor drifted with Australian TAB Sportsbet from $1.75 to $A2.50 but still retained favouritism.
Blacks A Fake, seeking his fourth Interdominion title on end, drew barrier one in the 2609m group one feature.
His price tightened from $A5 to $A3.
New Zealand Cup winner Changeover, a $A5.50 third favourite, drew barrier four.
The front line is seven.
Mark Purdon, the trainer of Auckland Reactor, contacted stable driver Blair Orange last night and said he would suggest to the owners that Orange would be a worthy replacement driver.
Orange (30) has not driven in Australia.
He has driven Auckland Reactor in track work and at trials.
He has driven in one Interdominion Pacing Final when fifth driving Harnett's Creek at Alexandra Park in 2005.
He has driven Toomuch To Do and Ado's Invasion in Interdominion trotting finals.
The driving status of Purdon remains in limbo as he prepares to appeal a six-week suspension handed down by Harness Racing Queensland stewards for his beaten drive on Auckland Reactor in the opening round of heats.
The appeal is expected to be heard on Thursday or Friday, meaning Purdon could be cleared to drive in the final.
Purdon drove the Roy and Barry Purdon-trained Mark Hanover to win the Interdominion final at Alexandra Park in 1991.
Tony Herlihy decided to commit to the horse he trains, Gotta Go Cullen.
The other New Zealand-trained runners fared poorly, with Gotta Go Cullen ($A51) drawing barrier six and Mr Feelgood ($A14) barrier 12.
There was controversy on Sunday when Herlihy and Ian Dobson, the owner of Gotta Go Cullen were reportedly at loggerheads over whether Herlihy would take the drive, AAP reports.
Herlihy said he would switch his charge to the care of Australian trainer Vic Frost so he could retain the drive on Auckland Reactor whom he drove to a dominant heat win on Saturday night.
Under the series rules, a trainer must drive his own horse.
