Okay, I've done this a few times, but not with a Dry.  Figured it suck
a pain, go with the higher end battery.

Problem 1 - Got a Optima battery with dual mounts.  The positive mount
was hitting a metal suspension brace, so I needed to cut the post.  The
sales guy said you could cut it with a hacksaw.  No problem, did this.
snipped the pan, no issue.  Batttery went in okay, little tough with
the cables.  Car starts, put it back together, I'm
done.........wrong.... next morning, dead.

Problem 2 - I think that the side terminals aren't making good contact,
postive mount bolt is slipping.  Get replacements, everything seems to
mount fine, seems that everything seats well, but still a problem with
the contacts...........put the old battery in, not problem with the
connects.......
Any suggestions??????????  Is there a some kind of washer to extend
out the contacts, I think it's the postive cable mount since it seems a
bit large.