On Sean Buckley's Twitter, he has a picture of Jerry Spencer holding up an entry list. These are the drivers listed:

42G Hopkins
18A Andretti
44 Pace
9P Price-Miller
57 Sciscoe
27A Shuman
71P Coons
35 Schuerenberg
29J Jarrett
66J Spencer
32 Abrams
40 Grant
78 Bradshaw
51G Gnat
6RR Liguori
05 Wessel
23C Courtney
21H Hewitt
23D Dautrich
74 Main
18W Welpott
41 Setser
10E Puterbaugh
6 Phillips
58 Fredrickson
2D Ingle
30 Leary
42D Donnelson
12 Ballou
39G Goodnight

Also:

18S Weir
31 Lowther