If there is a signification , is there a warranty type deal if the transmission ends up being bad?

Brian is correct but also make sure not to remove anything they mark or right on it will void a warranty keeps people who are not honest from bringing in broken cores and getting a working unit you know 2 for 1

30 day warranty no cash refunds just yard credit

They let you change it in other words you will have to pull out another one or they will give you store credit

Also when you say not to remove anything they write on , are you talking about the writing itself or do i have to let them know im takin the tranny before hand