Locked up Slant 6

$200 for 1 engine it was a great engine 68000 miles but has been sitting 4 yrs
Bought the car from a guy in Dania Beach. One owner 62,000 original, but was outside for 15 years and he took the cilynder head out and it is all rusted and can not be rebuilt. Car was all rusted also, but I have been doing the work in my garage. Does the engine turns ok?