fnfbird & OS, I was thinking of doing kind of a combination of what you were both mentioning. I want the Optima, but as my 67 is Blue was thinking of going with the Blue Top Marine Optima.
I haven't done a specific search for over all dimentions as of yet, just some quick price comparisons...
Go to a reputible retailer... like Sears etc. who would have a good cross reference and measure the over all dimentions... then go get your Optima based on the dimentions? Just a thought...