My OEM though less than one yr old, seems to feel weaker now that I've upgraded to a 351 and TM33/34 pumper carb. I guess i need one with a higher CCA rating than whatever the OEM is.

Are there any straight fit recommendations? What about the new lightweight lithium batteries ?

I'm in SW Florida so temps never fall below freezing EVER !!! Coldest it gets is in the 40's for a few days a yr.. So cutting a long story short cold temps are not an issue for me.

 

I went with an Earthx battery... Not cheap, but I dig the built in protection circuitry.

It's got a lot more punch (135CCA) than OEM

ETX12A EarthX lithium battery