Rock ‘n’ roll kick- ass king GREG ALLMAN in life and death struggle as he undergoes a successful liver transplant.

The hard livin’ ALLMAN BROTHERS band leader who once married to CHER had the surgery at the Mayo Clinic in Jacksonville, Fla. 

When Allman discovered he had contracted Hepatitis C in 2007 but chronic damage to his liver from his hard boozin’ lifestyle necessitated a liver transplant.

He had been on the waiting list until doctors found a suitable donor.

Lehman said Allman got the call late Tuesday afternoon and drove to Jacksonville from his home near Savannah, Ga., for the early morning surgery.

Docs told him to expect to be in the hospital for a week, stay in the Jacksonville area for up to three weeks and possibly if everything goes well be on the road by year’s end.

Allman battled addiction for years, suffering major side effects from the hepatitis, yet maintained a rigorous tour schedule.

"I changed my ways years ago, but we can’t turn back time," Allman said.

"Every day is a gift, and I can’t wait to get back on the road making music with my friends."

Docs are optimistic Allman will be able to attend the wedding of his daughter, Island, next month.