Im not so sure they pay that close attention to the size. They just want to see you have one that does the job. Ive heard some tracks will let a 20 oz. plastic Mountain Dew bottle for an overflow tank through.
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Chris - Ramsey, MN.
Dear Optimist, Pessimist, and Realist.
While you guys were busy arguing about the glass of water. I drank it!
I did the same thing with the last car I ran-a 20oz bottle held into a cheap plastic cupholder. Now I have a Jaz one attached to a piece of flat stock and a 180 degree molded hose I found on the shelf at work.
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Bryan-NW 'burbs 1972 Malibu Vaguely stock appearing, and the opposite of restored. 1999 std bore 5.7, Vortec heads, Holley Stealth Ram, GM cam 700R4, Viking coilovers, 12 bolt 4.10 posi, and a whole bunch more