Yeah... try this link here:
http://forums.civfanatics.com/showthread.php?t=190826
The TBF Avenger animation allows for "fighter-type" single-engine aircraft to shoot it's guns against aircraft, but drop bombs when attacking ground targets.
If you were to use the standard "fighter" animation for a single-engine bomber like the Su-2, it wouldn't drop bombs when attacking ground targets... ergo, if you use the Avenger animation (just include the files with your download), any single-engine bomber you make using that animation will drop bombs on bomb runs!
Coyote has used the same animation to great success with his single-engined bombers.