Bam,
Before you quit your job find out if you can drive for the company your truck owner is leased with. If it is Panther you should go thru their orientation first. Your history with felonies might be a problem.
As you have been told before, make sure your history is acceptable with an expedite company before you quit your job.
You been on this site before asking for advice. Make sure you don't react to something you want to hear instead of something you need to hear.........
And the thing about the fleet owners giving you phone numbers, don't hold your breath, many employers or truck owners or whatever you call them, respect the privacy of former drivers and withhold that information. They should ask former drivers to contact you, but there aren't any quarantees. That doesn't mean the fleet owners are bad.