QUOTE(wndsrfr @ Aug 8 2020, 08:40 PM)
I got my lithium battery at advance auto 2 years ago....autocraft LFP-8 for like $89.
Ditto. I'm running one in my street 2L /4, but mounted mine on the left side above the starter to shorten the positive lead run. Very disappointed they're not available any more.
On the race car I run "total loss" without an alternator, so a larger Honda-sized lead-acid in the standard location.
Edit: the one major downside to this battery on a street car is the lower reserve capacity. If you lose your belt or alternator you're not getting as far, especially at night.
The plus side, of course, is that it weighs nothing; in fact, both I and the Advance Auto cashier has to open the box to ensure the battery was actually in there...we were both pretty impressed.
Another plus side is it can be mounted in any orientation. As did John, I mounted mine laying on its side.