Can you take a picture of the existing axle/bolts and the fork ends (with the wheel removed)?

Thru-axles typically thread directly into the fork, and don't have nuts. Looking at pictures online, the SUB speed 30 doesn't have disc brakes, so it's highly unlikely that it would have a thru-axle. The exception would be is if Scott used some strange design to use a thru-axle hub with a standard fork.