I'm sure someone will get to you with details but thought I'd pass on some
links I've saved:
http://www.californiavan.com/battery/Battery.html
http://gerry.vanagon.com/cgi-bin/wa.exe?A2=ind0507b&L=vanagon&P=2051
It appears, and I've read numerous times, that the Optima is installed on
it's side.
bob

> I just bought a red top and a yellow top.  Both have four terminals.  How
> did you guys fit them into the battery compartments without mods???????  I
> am looking at sawing out parts of my seat pedestals to fit these in.