Robert Arthur Lambell, 52, was arrested at Macquarie Inn in Dubbo in February this year after an undercover operation that started at the Tamworth Country Music Festival in January.

Mr Lambell wanted the victims to suffer a prolonged death after being kidnapped by the three men he ordered to carry out the killings.

Mr Lambell, who operated Burns Country Clothing in Macquarie Street, will be sentenced on two counts of soliciting/encouraging/persuading to murder. He has been in custody since appearing in Dubbo Local Court earlier this year and appeared in Sydney District Court on Friday.

Police facts presented to the Dubbo court revealed how Mr Lambell wanted the victims murdered: ... "(they) should be restrained with a barbed wire whip and cable instrument that would leave cuts in their skin ... (their) tongues should be removed with acid and they should be left to allow the flies and ants to devour the victims' flesh."

Mr Lambell was the "mastermind" behind the first attack on victim Ken Kelly on June 19, 2002.

His motive was to obtain money and property for his de-facto partner Christine Burns, who was the victim's ex-wife.

Mr Lambell was bitter towards Mr Kelly and believed he defrauded Ms Burns over her father's and other money and property after the divorce.

In June last year, Mr Kelly was returning to his Coonamble home when he was shot at with a .22 calibre sawn-off rifle.

He escaped and called police who were given a description of a Toyota ute in which three men were travelling.

The ute was stopped on Castlereagh Highway that night and three men - Stephen Franks, 60, of Dubbo and Wellington cousins William Gil Stanley and Mervyn Wayne Stanley both aged 31 - were detained separately at the scene.

Mr Franks later hanged himself in the back of a police paddy wagon and a coronial inquest into his death is pending.

Charges were laid against Mr Lambell this year after he met a police undercover operative who was solicited to murder Mr Kelly and Ms Burns' brother-in-law John Stuart.

At the time of Mr Lambell's arrest, Orana local area commander Superintendent Ian Lovell praised the work of the Dubbo and Walgett police involved in the case.

"Surveillance and undercover work is often a difficult and dangerous process - people are desperate," he said.

"But this has been a good result and police have gathered quite a lot of information and done it very well."

Mr Lambell will be sentenced in Sydney District Court on February 26.