Both players have been out with shoulder injuries. Murray McConnell, James Malcolm, Will Bordill and George Hunter also feature for Ayr. Glenn Bryce starts at full-back for Heriot's.
Ryan Wilson will continue his rehabilitation from injury with a second successive outing for Stirling County. Rory Hughes also travels with County to face a Currie team that includes Tom Ryder.
Zander Fagerson, Tommy Spinks, Gary Strain and Jack Steele are included in the Glasgow Hawks squad that takes on Boroughmuir at Meggetland.