[Twister]

I'm pretty sure if you select no parachute it will fly into ground targets.

The next chalange has to be getting it to dive into the ground at the 'attack' point (when on AI)

Test flight proves, there is no need for special AI or AC tweaks to make it commit kamikaze attacks.
Pair of sample missions, demonstrating this, included in mod install. Missions is called V-1 and V-4 (for Germany).

Also, updated version of Fi-103 is ready, featuring warhead, powerful enough to take out warship with one or two hits.
Main link updated.
Highly recommended for V-4 mission. Have fun!