Big78Ford...what a great idea.
I had to go to Costco today, the Interstate battery they have is the group 27 with 600 CCA. I checked Interstate batteries and they have the SRM-27 which is 600 CCa so Im guessing they are the same battery... Costco has no other specs other than the 600CCA.
For $78.00 + $15 core that would be $105 Probably be good as a exchange out battery when my group 24 starts to drop. I can just swap out the batteries and keep on going. (worse case Costco gives me 12 month battery from purchase date).
Mustang 65 My meter has been shipped, thanks for the suggestion...