Is it worth it moving my battery to the back trunk in my 1991 Honda prelude si?

Is it worth it moving my battery to the back trunk in my 1991 Honda prelude si?

No reason to move it.

Not unless you plan to race it on a track, otherwise it would be pointless.

It depends on the climate where you live. If you are in Phoenix it can triple the battery life; if you are in Oregon it won't do anything for you. In the 25 years I lived in Phoenix I never got three summers out of any under-hood battery. Here in Flagstaff 6 years is pretty standard.