Emerson's (Bill) top will not fit a CR's anymore. To many changes. Unless of course he still has a pattern for them- and I don't think so?
ExcalibEr's tops certainly wont fit! Unless Ernie has gotten a real large head lately now that he is back on the Mainland!
ExcalibUr WILL fit if you can find one. They have been out of business for over 20 years, they copied CR's to infinity!
You might check on the ExcalibUr site to see if one exit exists?