The Aussies have won three of their four matches so far and will be keen to prove themselves in their tour finale in Edinburgh.
There are few shocks in coach Andrew Moloney's changes, with four to the overall 23 and a number of reshuffles in the starters.
Angus Bell, Billy Pollard and Zane Hogan return to the front row while Luke Reimer comes into the blindside flanker role in the forward pack.
Reesjan Pasitoa will take the reins at 10, with Joey Walton and Daniel Ala coming into the XV.
Brendan Jimenez has been rewarded for a spectacular outing against the Scotland Select U19s this week with a spot on the bench, looming as a potential X-factor.
The Aussies thrived in the perfect conditions of Scotland's indoor Oriam field and will have another chance to play at the unusual spot this weekend.
15. John Connolly, 14. Daniel Ala, 13. Angus Bell, 12. Joey Walton, 11. Viliami Lea, 10. Reesjan Pasitoa, 9. Spencer Jeans, 8. Will Harris, 7. Carlo Tizzano, 6. Luke Reimer, 5. Jeremy Williams, 4. Max Douglas, 3. Zane Hogan, 2. Billy Pollard, 1. Angus Bell.
16. Tyrell Kopua, 17. Harry Vella, 18. Thomas Lambert, 19. Tom Van der Schyff, 20. Jackson Pugh, 21. Lachlan Albert, 22. Carter Gordon, 23. Brendan Jimenez