What's the best modern battery for my Duster?

cruiser said
My repro battery is losing its cranking power. The new ones are around $350 plus shipping. I was thinking I could keep using the old one until it fails completely, but have a modern battery in the mean time so I don't get stranded somewhere.
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Note If you go down the battery topper route, what ever battery you buy be sure it does not have raised caps or sunken posts or the battery topper will not fit.


Sunken Posts
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flat top flat posts

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Note: this battery has a raised area around the post. I cut the hole larger for the post on my topper.

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also there is a wider hold down for use with the toppers
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