Just found out this bootleg Third Day cassette album. it's their first ever album in 1993. The sound quality is not that great cause it's rip from an old cassette. I don't think the original still exist.
Christian Sonic: Third Day - Long Time Forgotten (1993)

Then i also found Casting Crowns' 2001 indie released album before they were discovered by Sawyer Brown and signed on Beach Street/Reunion/Sony-BMG
Música Cristã MP3: Casting Crowns - Casting Crowns (2001)