When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Thats an interesting idea. Most people want to move the battery away from the engine compartment for weight distribution reasons. Why not replace the battery cable?
Go buy cable for a big truck, in "00" size. They can get it with the correct ends. You can also buy raw cable from NAPA and Tractor Supply. Just replace what you have and it should go another 30 years.
Battery is very close to the exhaust where your talking about putting it and batteries do not like that kind of heat. I would put it where it belongs with a larger cable if you can get one.