This aluminum sloop looks like a stock boat, and referred to as the PJ44, although only one was ever sold. She was built by Palmer Johnson of Sturgeon Bay, Wisconsin and launched in 1964.
Here's Rod Stephens performing sea trials and probably saying "Can't you guys trim any faster"?
Here are the plans.
Displacement 19,950 lbs
Ballast 8,500 lbs
Sail Area 852 sq ft