That is good information about Cosco batteries; thanks for that. I have been using Optima 6V batteries on four of my trucks (the '42 was converted to 12V when I got it). I had one last 13 years; the shortest life span was 5 years. Still they are rather pricey but their life span offsets that to a degree. The 6V is very narrow and you can install it in the stock battery holder by placing diagonally.
Kent
