When the Van Zandt character describes various dice combinations, he calls two fives "Box Cars". In fact it's two sixes that go by that name.
During a montage scene when Blaze is writing postcards from the road, Sybil is shown counting a handful of redesigned $20 bills. Foley was killed in 1989, but the redesigned $20 was not available to the public until 1998.
There is a mirrored sign for Icehouse beer in the Austin Outhouse bar. Ice beer in as a category and Icehouse itself did not come on the US market until 1993, four years after Foley's death.