Fisher joined the Rentcorp Motorsport squad in a shakedown session at Wakefield Park recently.
He was chosen from a list of candidates pitching for the seat in a line-up that includes team owner Indiran Padayachee, Ric Shaw and Aaron Zerefos.
“I was pleasantly surprised at Andrew's performance,” Padayachee said.
“This is his first time in a Porsche and he has never driven a left-hand-drive car before.
“It's a thoroughbred race car, very different from his V8 ute, but within just a couple of laps Andrew was on the pace and looked very comfortable.
“I've known Andrew for years, raced against him in production sports and seen him in the utes.