Rock Binder

Alright guys, I'm new to this forum but I'm looking for some help here...I'm doing a motor swap for a friend of mine he has a 250 I6 right now and we're putting a 289 in. The question that I have is about the bellhousing, will they match up pattern wise or do we need to get a new housing? And the other question is about the motor mounts, will they match up or do we need to re-mount them? Thanks.