Problem 65 Barracuda

I Am Currently Rebuilding A 65 Cuda. Rear Windows Don't Work, Replacing The Roached 273 With A 318, Speedo Housing Is Cracked All Of The Way Through, Front End Is Toast, And I Have Big Holes In The Corners Of The Wind Shield. Love The Car, But Realizing That A Later Year May Have A Larger Selection Of Parts. Any Suggestions?