Just to add to the mix here.
I also run an Optima battery in my truck and I am 12 volt. It fit the battery tray perfectly but I had to make a hold down bracket to keep it in place.
Optimas are great batteries.
~ Phillip
1949 GMC Suburban - 10 year project
1952 Pontiac Chieftain Convertible straight 8 hydramatic
1945 GMC half ton truck - Driver- Sold 9-15-25
1946 Chevy COE - SOLD 1-5-26 BUH BYE CHEVY!
1959 GMC Half ton long bed NAPCO
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