This is the weirdest question that never goes away. (Who propagates this stuff anyway?)
Mooneys have short legs, not Mooney pilots. (park next to a Cirrus for a good demonstration)
Trying one on doesn't cost anything. (except you run the danger of picking up a strong addiction to efficient speed (mph or kias). (m/hr-gal....)
Of course, I'm 6.00’, my Ovation was delivered with pedal extenders, and I raise the seat for optimized view level...
Take that back to Beech club... ( I don't think they care though).
I think the statement "I don't fit" is easier to go with than "efficient speed doesn't mean that much to me"...
If height was a REAL issue, you would see threads here that we're titled "I'm 6’ X" tall and this is what I go through to best fit in my Mooney." (but you can't)
Enjoy the search function, there has to be a few threads here regarding pilot size over the past few years...
Find a Mooney owner near you and ask if you can sit in his plane.
Best regards,
-a-