I hope you are wrong too.
They said that the measures are a a shade bigger then the actual battery.
And is sits in a metal and removable shell.
Since it will be inside another case, they said I could remove the metal shel.
The only measurement that I am concerned is the height.
My measures are conservitive too,
And actually, I could grind down the repro shell a little bit more on the inside top.
If it fits, it will put me at ease, because my 66 Corvette is 11,5 to 1...
And sometimes takes a bit to get it started sometimes. (It sits a lot more then get's driven)
The Vette is an A/C car, and the battery faces sideways for all to see.
That is why the topper is no good.
High compression, needs a lot more CCA's
Should have it early next week.