I'll check my ROM versions later and get back to you Eric.

checking the database, there is limited info if you open the .txt file for the ROM within the .zip download:

Williams: Fire!
ROM Revisions

Game Version L-3

U26 : Checksum: 776D
U27 : Checksum: E7EC

Sound Version L-1

U4 : Checksum: 4952

Speech Version L-2

U21 : Checksum: 9B54
U22 : Checksum: CB4C

PROGRAMMING NOTE:

Check the filesize of the ROM image to confirm what
size EPROM to use:

Size EPROM (size)
------- -------------
131,072 27C010 (128K)
65,536 27512 ( 64K)
32,768 27256 ( 32K)
16,384 27128 ( 16K)
8,192 2764 ( 8K)
4,096 2732 ( 4K)