In my opinion the biggest problem you’re going to run into or something you should look out for is when you remove the flooded lead acid batteries in your car you’re going to have a significant weight loss and therefore your shocks are going to give you a rather bumpy ride . David has a great solution for this. His Green Lithium Battery “kit” that requires assembly allows weight to be placed back in the locations it came from. Example You can remove your lead acid batteries and replace them with lithium in the same locations although it’s going to be lighter it’s better than nothing, and his kit so far seems to be some what bullet proof.
David can also set you up with a charger and a battery monitor.
A few members here have opted for the caddy of battery’s (Chevy BOLT) “Tyson” a member here has a 2001 with a 12kw Bolt battery in the front of his gem. It’s very cool