If your flywheel is a replacement part instead of the original, it may be drilled for both sizes.  I recently sold one that was that way.

John - "The Hoosier Hurricane"

Thanks Nick .. I guess I'll just get a 10" one .. I don't really need an 11 anyway .. just thought if it was the same I'd do that ..

Doing Fords for 45 years. '56 Customline Victoria

E.J. in Havana FL

No, unless the flywheel is re-drilled for the 11" bolt pattern.  There are probably some aluminum aftermarket flywheels that are drilled for either size.  Good luck, Nick Brann - K.C., MO

Does anybody know if an 11" pressure plate will bolt to where a 10" pressure plate was? In other words can I replace my 10" pressure plate with a 11" one? Thanks a ton ..

Doing Fords for 45 years. '56 Customline Victoria

E.J. in Havana FL