Yes, Sister is the name of it. I actually didn't care for Go!as much as the first two, though it did have some good songs on it. "I Got Time", "Anchor" and "Co-Pilot" are my favorites from that album. Wholesale Meats And Fish is probably my favorite LTC album.
iTunes only has Go! and Wholesale. I checked out samples of Sister on allmusic.com. Didn't sound like anything special, plus the first track is a re-recording of "I See" from their first album. From short clip, it didn't sound as good as the earlier version.