It's understood the pair has purchased land neighboring its harness property at Cardigan and plans to operate a thoroughbred pre-training centre there.

Tonkin was quoted in a story on the harnesslink.com website where he revealed "millions of dollars" would be poured into the facility.

"It's about building a sustainable future and finding a way we don't have to work as crazily hard as we do now," Tonkin told reporter Adam Hamilton.

"Don't get me wrong, harness has been great to us, but we can't keep going long term with so many horses and working these hours for the returns we get.

"We will keep training the pacers and trotters, but just not with the huge numbers we've got now."

Meanwhile, boom pacer Poster Boy is finally ready for a return to the races.

A serious case of pneumonia almost took the life of the Stewart-trained star, cutting him down at the peak of his powers last year.

But 11 months on from his last race, the 2019 Chariots of Fire champion is poised for his competitive return.

Three trials in Ballarat behind closed doors have tuned up the son of Somebeachsomewhere for Saturday night's TAB, Long May We Play Pace (1720m, NR 90 to 120) at Tabcorp Park Melton.

He's drawn the widest of the small field in barrier six, but should be far too good for his rivals despite being first-up from a long break.

Greg Sugars will take the drive.