looking for a 1956 Buick Special 2 door coup in 1/ 24 scale or larger? anyone know where i might find one?

I didn't research this, but likely sources would be R&R Resins or Modelhaus in resin form. A quick search of the internet will reveal where these can be obtained It is more likely to be in 1/25 than 1/24 scale.

Would this be for a "Broderick Crawford" Highway Patrol police car? Two door coupes were typical of 1950's police vehicles as they were cheaper.

Not so popular with car modelers tho, as a rule they would prefer the two door hard tops.Of late some two door coupes have been released,ex: 1957 Ford 2dr sedan stock/police car versions.

Hope this helps,
Jake