I used a battery from walmart, Everstart 51 and some SAE to JIS post converters for my van. The new battery is 500+ CCA and the conversion posts are on amazon https://www.amazon.com/dp/B07BJHBDTC?psc=1&ref=ppx_yo2_dt_b_product_details. Fits like a glove:
You have a Suzuki Every. This is the Subaru Sambar subforum. The 51 and 51R will *NOT* fit in a Subaru Sambar without physical modification.