Mine are not Trucklite brand. I will have to check again, they may be 4 1/2" holes.
Thanks to all for the great info. I will check the e-bay number.

57 GMC LCF 370
55 John Deere 40-W
59 John Deere 430-W
2000 GMC 4x4
56 John Deere 420-W
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