I just got one from Walmart last month:
EverStart MAXX 48N, 850 CCA
It put out more cranking power than the 27F and physical dimensions were pretty close (48N is about 1 inch shorter).
Great cranking battery, terminals located towards the back of the battery giving tons of clearance away from the hood. It was around $75. If it ever goes you can get a replacement 24 hours a day, 7 days a week as close as your local Wally World.
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